Toyota Prius c 2013 — Problemas reportados

November 2, 2026 approximately 1:37pm I was coming to a stop intending to take a left turn onto a Highway. As I applied the brake the car suddenly lunged forward almost throwing me into oncoming traffic at very high speeds. I was far too close to colliding or being thrown in front of a car that was traveling in the nearest lane. They took a lane change that was thankfully clear for them to do. This specific part of the highway had a fatality crash just 3 days prior. Suddenly, lights show up on the dashboard including ABS, brake, traction control and the warning light. The brake actuator assembly failed. From what I’ve seen this is a known issue that Toyota has acknowledged with a specialized warranty that my vehicle has aged out of. However the most crucial is I am well under the mileage for the part to have failed due to ware and tear. This was a manufactures fault. Tomorrow I will have the car inspected and confirmed that the failure occurred.

On XXX, at approximately 152,570 miles, the brake, ABS, and traction-control warning lights illuminated at the same time on my 2013 Toyota Prius. The brakes felt spongy, and I heard a recurring buzzing sound approximately every 3 seconds. Because of the change in brake-pedal feel and concerns about braking safety, I stopped using the vehicle. I reported the problem to Longo Toyota in [XXX], which directed me to Toyota customer support. The vehicle was subsequently diagnosed with trouble code C1391, “Internal Leak in Accumulator.” I contacted the dealership and Toyota customer support about Customer Support Program ZJB, which addressed code C1391 brake booster and brake booster pump failures. Toyota denied coverage because the failure occurred outside the program’s time and mileage limits. The symptoms began only 2,570 miles beyond the 150,000-mile limit. My primary concern is **safety**, not simply the expiration of coverage. The vehicle developed spongy brakes, multiple warning lights, and frequent buzzing. The diagnosis appears consistent with the type of brake-system failure Toyota previously addressed through ZJB. I request that NHTSA investigate whether this condition constitutes a safety defect affecting 2013 Toyota Prius vehicles and whether a recall or other corrective action is warranted, including for vehicles that develop the failure after the support program expires. I can provide the diagnostic report and available supporting records. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I experienced sudden unintended acceleration. While I was making a right turn from the street to my driveway, my car suddenly accelerated on its own and hit the side of the house and the garage door, causing significant damage to the house and the front of my car. My street is uphill, so my car was almost stopped when I made a turn. My car suddenly lurched forward passing the upward incline to my driveway. The windshield cracked due to fallen bricks from my house. I heard the noise of sudden acceleration, and the next thing was my car hitting the house hard. I had my foot slightly on the brake. My chest hit the wheel due to the shock, but the airbag was not deployed. I experienced a mild concussion to my chest.

While driving our 2013 Toyota Prius, the vehicle experienced a sudden and severe loss of braking effectiveness while the vehicle was in motion. This created an immediate safety risk because the vehicle did not respond to braking as expected. After the incident, the vehicle displayed the red BRAKE warning light, ABS warning light, brake-system warning light, and an audible warning. The vehicle was not driven after the failure and was transported to a Toyota dealership for diagnosis. The dealer confirmed a brake-system fault and recorded diagnostic trouble codes C1241, C1252, C1253, and C1256. Toyota previously issued Customer Support Program ZJB for certain 2010–2015 Prius vehicles involving internal brake booster and brake booster pump malfunctions. Toyota’s documentation for that condition identifies C1252, C1253, C1256, and C1391 as relevant diagnostic codes. This vehicle has three of those listed codes. The problem has been confirmed by the Toyota dealership. The failed brake-system components remain installed and are available for inspection at this time. There were no known brake-system warning lamps before the braking failure. The warning lamps and audible alarm appeared in connection with or immediately after the failure.

While driving, my brake pedal would randomly lose power assist. The pedal would get hard and I couldn't press it down normally, and I had to push as hard as I could just to get the car to slow down. This happened more than once while driving and I almost crashed because I couldn't stop the car in time. A scan later showed codes C1252 (brake booster pump motor on-time abnormally long), C1253 (pump motor relay fault), and C1256 (accumulator pressure low), pointing to a failure in the brake booster pump/accumulator system. A repair shop confirmed this and said the brake booster assembly with master cylinder and the brake booster pump assembly with accumulator both needed to be replaced. I also contacted Toyota and was told my car was previously covered under a Warranty Enhancement Program for this exact part, which has since expired meaning this is a known issue with this component. The part is available for inspection if needed.

The contact owns a 2013 Toyota Prius. The contact stated that while driving and pulling into a parking lot, there was a burning odor coming from the vehicle. The contact exited the vehicle but saw no fault with the vehicle. The contact was then notified by another person that the vehicle had caught on fire. The fire department extinguished the fire and informed the contact that the windshield washer fluid reservoir was melted in half with burned wires nearby. The fire department stated that the fire was caused by the electrical wiring on the passenger’s side near the coolant reservoir under the hood. The vehicle was not destroyed and was towed back to the residence. A bystander who helped extinguish the fire had sustained a burn to the left arm. Medical attention was administered at the scene. Additionally, the contact stated that the passenger’s side rear tire was losing air pressure every morning with the TPMS warning light illuminated. The manufacturer was notified of the failure. The failure mileage was 138,932.

The contact owns a 2013 Toyota Prius. The contact stated that while driving 60 MPH, the ABS warning light illuminated. Minutes later, the vehicle started to brake and lurch forward with the accelerator pedal depressed. The contact stated that the vehicle spun out and crashed into the median. The contact’s chest struck the steering wheel, causing bruising and chest pain. The contact was managing the pain with analgesics. The vehicle was towed to an impound lot and was deemed a total loss by the insurance company. A Police report was filed, but the report number was not provided. The manufacturer was contacted and was made aware of the failure. The failure mileage was approximately 140,000.

My 2013 Prius has 86,500 miles on it. It has been regularly maintained. A routine state inspection revealed a severely rusted rear axle beam and a front axle that is heading in that direction. Other Prius' in [XXX] have had this issue, and in some cases, the wheels have detached from the axle while the car is in motion. That is documented. That is a major safety concern, as who would expect to see an axle issue, especially in a low mileage car. I found a similar NHTSA complaint, XXX, on a 2013 Prius in [XXX], as well as issues in [XXX] with 2010 and 2012 Prius vehicles. The Toyota dealership that found this issue deemed it to be "a major safety concern" as the beam is "rusted apart". There were no warning signs, no issues, until the visual inspection. My concern is not simply the cost of repairing an older vehicle. I am concerned that a structural component has corroded to the point of being describe as "rusted apart", creating a major safety concern on a vehicle with limited mileage. The threat of a wheel separation or loss of vehicle control is a serious risk that needs exploration. I called Toyota Headquarters and they indicated that the car was out of warranty and there had been no recalls. The case number for that contact is: [XXX]. Toyota has previously recognized that corrosion of structural rear components in salt-belt vehicles can create a safety problem, but I do not know if that commentary has been applied to Gen-3 Prius'. I respectfully request the NHTSA review its complaint records and manufacture submissions to determine any pattern of premature corrosion or structural failure involving the rear axle beam/rear cross-member of 2010-2015 Toyota Prius vehicles, particularly vehicles operated in states where road salt is routinely used. Thank you. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While I was driving on the freeway the dash lit up with multiple lights. Simultaneously, I lost power to the car and could not accelerate and only break. The steering was tight and I could not steer correctly. Then a message that said, CHECK HYBRID SYSTEM STOP THE VEHICLE IN A SAFE PLACE IMMEDIATELY. The was slowing down and I had to pull over on the side of the freeway. There were no fluids leaking from the car.The car did not power back on nor run for over 10 minutes. The incident put my safety and other safety at risk by turning off while driving highway speeds. I was afraid for my life. There is an open recall which has not yet been resolved Major Safety Recalls for the 2013 Prius •The Hybrid Inverter Module (Critical Recall): Excessive voltage inside the Intelligent Power Module (IPM) can cause the hybrid system to overheat, shut down completely, or put the car into "limp home" mode while you are driving.

The break pump for my 2013 prius is going out and is a known issue with Toyota. I contacted toyota and they have stated because it is past the extended warranty they can not repair it and aren't liable for it. I bought the car used and was unaware that it has been a known issue for years. The previous owner did not have it replaced as they were probably unaware as well. It is a highly unsafe issue and has caused my breaks to suddenly go our while driving recently with my toddler. It is also $3000-$5000 to fix it and is almost more than the cars value. I need help resolving this as it isn't "normal wear and tear" or a mileage issue. It is a known, very public defect that toyota has admitted and I have been able to easily find information on all over Google. The warning lights came on out of no where on the freeway today.

I purchased a 2013 Toyota Prius from a reputable dealership in Omaha (O'Daniel Honda). 5 days after purchase the ABS, BRAKE, and Traction Control lights came on in the evening. When I took it to the dealership the next day they had cycled off and the dealership couldn't find anything wrong. A few days later it happened again so I got into the dealer right away and they said Toyota had issued a service bulletin C1391 in 2019, and that I would have to replace the brake booster, brake cylinder, and brake pump assembly. I'm still fighting with the dealership to make this right, because they should have caught this during their inspection before putting the car for sale on their lot. The indicator lights keep cycling on and off. Something that effects the braking system should be a recall and not a service bulletin.

Brake actuator failed

The contact owns a 2013 Toyota Prius. The contact stated that while driving at an undisclosed speed, the ABS, traction control, and BRAKE warning lights were illuminated. The contact pulled off on the off-ramp and became aware that extra effort was needed to depress the brake pedal. The vehicle was towed to the dealer and was diagnosed with brake booster and accumulator failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 120,000.

My vehicle has 105492 miles and ABS light, Trackion and Brake light went on. I could hear a buzzing sound from the brake actuator every 5 seconds. The brake actuator and master cylinder was failing. According to the dealership failure of brake actuator and master cylinder is a common safety issue with Toyota Prius. The failure of the actuator can lead to failure in the braking system and a crash. Online research shows that several customers have reported this issue. The Claremont Toyota quoted me $3646 to fix this issue. I contacted Toyota of America and they informed that they cannot cover these repairs case number 260515002576.I took my vehicle to a private mechanic. I paid $2312 for parts and labor to fix this safety issue. I would like to file a complaint against Toyota for not addressing this critical safety issue.

I am the first owner of a Toyota 2013 Prius that I purchased in Baltimore, MD, in 2013. I moved Georgia in 2014. The car currently has 130000 miles. I heard there were recalls on this vehicle type few years ago, but I was never notified. The brake has failed recently with code C1391. I spent $3,500 recently and the car is still in the repair shop.

While driving straight on smooth paved road, car began to shake and right rear passenger wheel came completely separated from car. After skidding off the road and being able to visually inspect, it was clear the sub-frame had broken and the wheel had come off in its entirety. The rotor, the lugs, and calipers were all still attached to the wheel.

Code 1391 / power brake booster failure. Know defect by Toyota in which they extended warranty, vehicle is within mileage warranty but past the date warranty. Therefore Toyota will not assist in repairing. Very troubling in that this is a high risk recall or safety issue well known and instead of repairing extended. Repairs cost more than half the value of the vehicle and we are heavily reliant on this car and cannot afford 4k repair nor would sell knowing the saftey issue. Apparently there was notices sent for voluntary repairs in which I never received, had I received and reviewed I would have had repaired. My car had been to Toyota dealership and was never notified of this recall. Toyota offered voluntary programs (such as ZJB or model-specific extensions like 21TE01 for certain 2012–2014 Prius c vehicles) to replace failing brake boosters and pump assemblies.

The brake light, abs light, and traction control light is on. This was a known issue with Toyota Prius. They extended the warranty but failed to adequately notify user. I believe this is a serious safety issue and should be a recall as it affects the adequate stopping of a car, not just an extended warranty.

I am filing a formal safety complaint regarding a catastrophic brake component failure on my 2013 Toyota Prius, occurring at less than 83,000 miles. The vehicle’s Brake Master Cylinder/Actuator Assembly has suffered an internal hydraulic pressure leak, causing the electric booster pump to run continuously to prevent a total loss of braking assist. This is a well-documented manufacturing defect that directly compromises passenger safety, drastically increases stopping distances, and threatens a complete loss of power assist while driving. Toyota explicitly acknowledged this inherent design flaw through its Customer Support Program (ZJB). However, they limited coverage to a strict 10-year expiration date from the first date of use. Because my vehicle has exceptionally low mileage and was driven gently, the component took longer to degrade, causing it to fail just outside Toyota's arbitrary time limit. Limiting safety coverage based on time rather than mileage penalizes owners of low-mileage vehicles for an engineered factory defect.

On June 20, 2026 while driving the Toyota Prius I experienced a sudden brake failure. Initially I thought I might have pressed the accelerator instead of the brake. But then pressing the brake I found the car did not stop and the ABS brake, brake lights, and other lights lit up on the dash board. The car had only 61,150 on the odometer. I called on Toyota for their warranty coverage but they declined saying that the vehicle is no longer covered. This brake failure should have been under Recall. AAA auto service has pulled C1391 vehicle code - requiring removing and replacing brake booster pump assembly with master cylinder, etc.

There have been several reports of this matter and a ton of recalls due to the Brake Booster issues with all Prius makes and models from 2010 on. The recall was issued and ended before I purchased this vehicle and never fixed. The brake booster has recently began having trouble in my vehicle. I purchased it in February of 2024, the recalls all show they quit honoring them in 2023.

Brake booster went out, car only has 78,000 miles

See attached document for complaint.

Brake pedal is going all the way to the floor the car barely stops. The ABS and brake lights show up on the dashboard and won't go away; when I used a diagnostic scanner to find the problem, three malfunction codes involving the brake system showed up. This has been going on for five days now, and I am going to take it to the manufacturer for further inspection.

Actuator needs replacing, currently at 127k miles and displaying traction control, brake and ABS warning lights. The repair will be a few thousand dollars, the cars market value is only around $6k. This is a known Toyota defect for this generation of Prius but Toyota hasn’t recalled these vehicles. I think Toyota should have to pay. The vehicle is out of warranty at 127k miles and it’s a 2013

Year/Make/Model: 2013 Toyota Prius • Component: Brake Booster Assembly with Master Cylinder (Part #47070-47060) Description of the Defect: After approximately 30–40 minutes of driving, my dashboard illuminates with the Brake, ABS, and VSC warning lights simultaneously. The brake pedal becomes inconsistent and requires significantly more effort to stop the vehicle. This is a known internal fluid leak within the brake booster assembly that causes the accumulator pump to run continuously and ultimately reduces braking performance — a direct safety hazard. Why This Requires Federal Attention: This is not an isolated incident. Hundreds of 2013 Prius owners have reported identical symptoms, with associated diagnostic trouble codes C1391, C1252, C1256, and C1253. Toyota acknowledged this defect by issuing Technical Service Bulletin TSB-0089-20 and a Customer Support Program (ZJB) providing limited extended warranty coverage. However, that program was not well publicized . I was never informed as a vehicle owner . And it has now expired, leaving thousands of owners with a dangerous defect and repair bills costing thousands . A safety defect of this magnitude — one that can result in sudden, significant loss of braking ability — should not have an expiration date on its remedy. Toyota has not issued a mandatory recall, and owners continue to unknowingly drive vehicles with compromised brake systems. Requested Action: I respectfully urge NHTSA to: 1.Open a formal investigation into this defect across all affected 2013–2015 Toyota Prius model years 2.Require Toyota to issue a mandatory safety recall 3.Compel Toyota to cover repair costs for all affected owners regardless of mileage or age of vehicle

THE ABS brake system is now making a noise that is directly related to the failure of the brake pump booster and associated parts. I only know about this as I was able to look up other people that have heard a noise coming from it and I was able to directly compare my sound to video recordings of other priuses that make that noise just before the system fully fails. Mine has not yet completely failed and there are no warning lights yet, nor are there any "recalls" out for my VIN number. My car is also outside of the 10 year "extension" that toyota issued for he part, but is well under the 150,000 mile marker that toyota chose. It's at around 113,000 miles currently. I listed the date of the incident as the first date that I began hearing this noise. Please help.

Brake booster failed. We were driving on the freeway and almost got into a pile up. Brakes completely stopped working and pedal became very stiff. The more I look it is this is an extremely common issue

My 2013 Toyota Prius with only 99,000 miles is experiencing a brake system failure. The brake warning light, ABS light, and traction control light all illuminate. The brake actuator pump runs every 10 seconds, indicating loss of hydraulic pressure. Safety concern: This issue affects braking performance and disables ABS and traction control, creating a safety hazard, especially in emergency braking situations. This appears to be a known issue with Toyota Prius brake actuator assemblies. Toyota previously issued a warranty extension, but my vehicle is now outside the time window despite low mileage. This failure occurred prematurely and without warning. What happened: The warning lights temporarily went off after adding brake fluid but returned shortly after. The pump continues to cycle frequently, indicating system failure.

While driving my 2013 Toyota Prius, the red brake warning light, traction control, and ABS warning light suddenly illuminated on the dashboard. The brake pedal became spongy and required significantly more effort to stop the vehicle, indicating reduced braking power. The vehicle was diagnosed with code C1391 — abnormal leak in the brake booster accumulator assembly — a known manufacturing defect acknowledged by Toyota via Customer Support Program bulletin ZG1 for 2010–2015 Prius vehicles. The brake accumulator was replaced by a repair shop (ARC Auto Repair, Pasadena, CA), but the issue has recurred. The symptom is pressure-dependent: brake performance degrades in Eco drive mode as accumulator pressure bleeds down, and partially restores in Power mode when the system is forced to repressurize. Toyota dealership (Hamer Toyota, Mission Hills, CA) and Toyota Customer Experience (1-800-331-4331) both declined to assist, citing expired warranty. This is a known safety-critical defect in the braking system that Toyota has previously acknowledged. No crash or injury occurred, but the reduced braking capability presents a significant safety risk to the driver and public.

This vehicle qualifies for a repair under T-SB-0024-19. However, this TSB expired in 2023 but the defect and responsibility shouldn't. The car didn't qualify for the repair before the TSB expired, but does now. Because the bulletin was issued and Toyota as acknowledged the repair is needed I have asked them to cover the repair as if it was prior to expiration date. Without the pricey repair, the car is unsafe to drive at no fault of the purchaser. The TSB covers the brake booster and brake booster pump and fail. Do lives have to be put at risk for Toyota to honor and repair the very thing they know is faulty? The car has under 115,000 miles and the issue just started in February. The dealership refuses to provide an itemized repair receipt. The ticket just outlines warranty information of the repair and the second are the techs notes provided via text.

My 2013 Prius brake booster aassembly with aster cylinder had to be replaced for the sum $3996.75. Milage on the vehicle was 109,541. The car 's brake light went on and the engine area a buzzing occured. The car was very difficult to stop and I was concerned enough to drive the vehicle home and have it towed to the [XXX] Toyota dealer. I was informed that I needed a brake booster assembly and master cylinder the quote was about four thousand dollars. Attached is my paid bill for $3996.75. The VIN number of the car is [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This is the 3rd time I have had to address this issue. The ABS system fails, resulting in increased braking distances. The dealership refuses to warranty or recall this dangerous defect, replacing the parts which fail again. Symptoms include increased braking distance, extremely hard pedal, lack of ABS function, lack of traction control, lack of hybrid regen. The entire dash lights up with indicators for all these functions.

While driving my 2013 Toyota Prius (110,691 miles), multiple warning lights suddenly illuminated on the dashboard, including the ABS, Brake, and Stability Control lights. I initially took the vehicle to an independent specialist (DC Line), but the mechanic there suggested I take it directly to Toyota because his staff recognized this as a known manufacturing defect that should be covered by the manufacturer. A Toyota dealership confirmed diagnostic code C1391, which indicates an internal high-pressure leak in the brake actuator and booster assembly. This is a critical safety defect that causes the brake pedal to become soft and unpredictable, significantly increasing stopping distances and disabling the ABS system. This poses a direct threat to my safety and others on the road. Toyota is fully aware of this defect through Customer Support Program ZJB, but they are refusing to cover the repair because of an arbitrary expiration date they set for 2023. I am currently 40,000 miles under the 150,000-mile limit Toyota established for this exact part failure, yet they are using the 2023 calendar date to deny coverage. Furthermore, I was never properly informed of this defect. Toyota claims they sent a single notification card in 2018, which I never received. I am now being forced to pay $3,000 out of pocket for a manufacturing flaw that even independent mechanics recognize as Toyota’s responsibility. It is unacceptable that a manufacturer can avoid responsibility for a dangerous braking failure by relying on a single postcard and an arbitrary 2023 deadline on a vehicle well under the mileage limit. This should be a mandatory safety recall, as the safety of a vehicle's braking system should not depend on a postcard or a calendar date.

I was driving and notice ABS light and other light came on, then noticed that when I tried to brake it felt weak, had to pump brake, then later noticed a leak on brake fluid. I took car to Toyota and they checked it and said brake booster and booster pump needed replacing and they wanted to charge me 3,000 dollars. I could not do the job so I checked around and the auto one in my area informed me that many Toyota Prius’s had a recall on that issue. I made an appointment with Parks Toyota in Deland, Florida to fix problem but when he got there they told me that my car was not on recall for that but was for battery EV fuse but couldn’t do because my engine light was off. I am having such a difficult time with this car. I cannot risk my life and that of others driving with this brake condition if I can’t have the manufacturer or who ever has to to take care of this issue. So far I was able to get a mechanic to do some adjustments so I can drive. I am being very careful and only use it as needed. I stopped looking for a part-time job because I need this fixed first. I am [XXX] , please tell me if I am able to get this recall show for me. Thanks INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2013 Toyota Prius C. The contact stated that while his wife was attempting to cold-start the vehicle, the vehicle failed to start. The contact stated that on several occasions the vehicle was started; however, the instrument cluster and other electrical devices failed to operate as needed. The contact replaced the auxiliary battery. The vehicle was repaired, but the failure reoccurred, and the vehicle needed to be jump-started. The vehicle was not taken to a local dealer or independent mechanic to be diagnosed or repaired. The contact researched online and related the failure to NHTSA Campaign Number: 20V369000 (Hybrid Propulsion System); however, the VIN was not included in the recall. The manufacturer was not informed of the failure. The failure mileage was approximately 150,000.

The contact owns a 2013 Toyota Prius. The contact stated that while coming to a stop, the brake pedal was depressed; however, the vehicle unexpectedly lunged forward. The ABS warning light and other unknown warning lights were illuminated. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 65,000.

ABS warning light illuminated and the system failed while driving, causing longer braking distance and reduced steering control during braking. I am concerned this ABS malfunction increased the risk of a crash for me and other road users.

Brake master cylinder failure.

The brake actuator/ABS hydraulic system on my 2013 Toyota Prius failed. The component is available for inspection upon request, as it was replaced by a Toyota dealership. Prior to failure, the vehicle intermittently displayed ABS, Traction Control, and VSC warning lights while driving, which would sometimes clear on their own but eventually became persistent. This condition reduced or disabled ABS, traction control, and vehicle stability functions, increasing the risk of loss of control or reduced braking effectiveness, particularly in emergency braking or low-traction conditions. The problem was reproduced and confirmed by a Toyota dealer, who diagnosed the failure using diagnostic code C1391 indicating internal brake actuator malfunction. The vehicle was inspected by the manufacturer’s authorized dealer, who replaced the brake actuator assembly after three days of repair at a cost of approximately $3,000. Warning lamps were present for months prior to the final repair and gradually progressed from intermittent to constant, indicating a worsening failure of a known issue affecting this generation of Prius vehicles.

I was driving on Saturday January 10th, 2026, when out of nowhere all of my dash warning lights came on and the brakes felt spongy and unresponsive. I had to limp home with 20% of my brake capacity which was very scary. Did some research and it was my brake actuator that went out. Dealer quoted me $4,000 to fix! This is a very common issue with Priuses between 2005-2015 and it's a crime that the part has NOT been recalled. Please put out a recall for this part. Toyota has already had a class-action lawsuit so precedent has been set. I have no idea how I'm going to pay $4,000 to fix this, I'm recently unemployed. Please hold Toyota liable!

Crack in the Engine. I had been following the recommended Maintenance schedule, but I suddenly had issues where the engine would stall/stutter on activation (switching from electric to motor operation). The check engine light came on, and I immediately took it to the dealer who replaced the battery and spark plugs saying that was the issue. That solution did not even last a month, as I had sometimes severe shaking in the engine along with the stutter. I again brought it to the dealership who told me that the actual problem was a cracked head gasket and that the vehicle was "mechanically totaled". I was lucky that I live close to the dealership and worry what would have happened if I had to drive on it further.

Car suddenly needed a jump start and again after a day or two of non-use. On the third day Brakes, ABS and traction control warnings were lighted up and remains. Brakes are mostly ineffective. My own scan returns the code C1252 and C1256 that says brake booster system failing. Took it to the dealer who charged $290 again to scan and came up with failed brake booster and pump assembly. The dealers is quoting total $4000 to fix. Toyota Customer Support Program Bulletin dated 8/2018 and revised on 8/2019 extends the warranty on for this issue (for Toyota Prius C 2013) for 10 years or 150000 miles. I was never informed by Toyota or the seller (Stevens Creek Toyota, San Jose CA) about this defect under warranty that I could have gotten repaired well before the dead line of 10 years. Now Both Toyota or the dealer's service department refuse to bear the repair cost.

Warning lamps for ABS and others and the chiming dings came on while pulling away from the bank drive through and parking for a second. I shut the engine off and turned back on with no success. I was barely able to park in a spot because of difficulties braking. My car had been making an electric noise every 15 seconds or so previously, at different times when parked, but I thought it was the hybrid engine. Now I think it was the brake pump trying to build up pressure due to a faulty, leaking brake actuator.

Red brake light came on, traction control light came on, ABS light came on, Toyota says my brake pump needs replaced. That my brake will fail.

On [XXX], we were driving from Coalinga, CA to Phoenix, AZ for Thanksgiving. As we began to descend into Los Angeles on [XXX], three warning indicators suddenly went on: the ABS warning light, the traction control light and the brake warning light. The brakes still worked but the brake assist was weakened. We pulled over as soon as possible at the nearest AutoZone. The employee performed a standard handheld OBD-II scan of the vehicle and did not detect any issues. We continued on our way through Los Angeles and to San Bernadino where we were spending the night. At one point the indicator lights went off for a few minutes but then came back on. We spent the night in San Bernadino, and the next day (11/26/2025), we took the car into the San Bernadino Toyota Dealership as we felt it was unsafe to keep driving. The dealer conducted a thorough full brake and hybrid system diagnostic and confirmed that the failure was inside the brake booster system. The repair estimate states: "Brake booster assembly with master cylinder and brake booster pump assembly have an internal leak." Thus, Toyota's own technician identified an internal hydraulic leak within the booster system, affecting the booster assembly, master cylinder, and booster pump assembly. The total repair estimate is $3,959.99. This is a major safety defect affecting sealed hydraulic components that are not part of routine wear-and-tear. There were 4 people in the car. Fortunately, the brake failure did not result in an accident, but it could have if we had kept driving on to our destination. We contacted the Toyota Brand Engagement Center to ask for Goodwill Assistance, but they were unable to help us. In addition to the repair costs, we have incurred rental car costs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The Brake Booster and Brake Booster Pump Assembly have failed. They have caused the following warning lights to go on: ABS, Brake System waring light, Slip Indicator Light, and the Electric Power Steering light.

My daughter was driving the 2013 Toyota Prius on the interstate in Chattanooga, TN. The brakes did not feel right and the car was very difficult to stop. (It did not brake at a normal distance) My daughter was able to get someone safely, and she had the car towed to the dealer. My daughter's life was endangered by this brake booster failure, but there is no recall listed on the vehicle. Also, when I Googled the issue, I found that it is a well-known and common problem in this year Prius. The brake booster failure is due to a Toyota design flaw, and Toyota is apparently being sued for it. Why is this issue not listed as a recall? I would not have allowed my daughter to drive around in a car for which the brakes are known to fail. How many accidents and deaths will be caused by this problem before Toyota stands behind their product and recalls affected vehicles? I had to pay $3200 for this brake repair, even though it is caused by Toyota's design flaw and endangered my family's life. My family owns four Toyotas, and I do think they make the most reliable vehicles on the road. I cannot understand why there is not a recall, and they are not standing behind their product.

brakes had no stopping power. Normally when braking it was smooth. All the lights went on. Toyota dealer confirmed that the brake booster Pump Assembly and Brake Master Assembly needs to be replaced.

My 2013 Prius Plug-In Hybrid with 131k miles on it showed the ABS, Brake, and Traction Control lights while driving last week. Diagnostics from auto shop showed DTC code C1391. System is available for inspection upon request. Safety is definitely at risk, since I am needing to drive it around to assess the issue, and brakes could fail at any time. Vehicle has not been inspected by the manufacturer, police, insurance representatives or others. After speaking to Toyota, I was informed that--although under 150k miles--my car is not covered by the extended warranty because it is 2 years past the 10 year requirement. I drove my car very little between 2020-2022 because of the global pandemic. This is a very common issue with 2012-2015 models caused by a defective part, and it's likely that the problem does not commonly present itself until after the warranty expires.

Brake actuator went out on 2013 Toyota Prius Gen 5. The part is very expensive and in my opinion is a part that should not have to be replaced. The care has 120,000 miles. It is driven very softly, meaning not fast and hard but commuting to work and grocery store as needed. A nice commuter. It is not fast but gets you there. The actuator put me at risk as stepping on the brake was hard and the car did not want to stop and I was close to hitting the car in front of me. All the lights came on at the dashboard and I was very scared to continue to drive and had to get a tow truck.

I had my car serviced Oct 21 and when I picked it up the vehicle brakes made a whooshing noise and felt spongy. I thought it must be ok as they had just serviced it but when it became apparent this could be a problem I took it back Nov 1 and was told the hydraulic brake booster pump needing replacing at the cost of $3400. I was shocked as they told me it could break completely AT ANY TIME but the brakes would still work. I decided to drive it home as that is an enormous car repair bill and I would have to get financing or get a different car. I didn't want to make rash decisions. I investigated the issue and found out this was a recall for these vehicles for 2010 through 2019 models. This same dealer did not mention this to me at the time of sale, that they had been subject to a recall, and since I did not have them inspect the car immediately after service (I had to miss work and my son drove me after he was off work and I feared they would close before I arrived so I had them park the car outside and the sales desk had the key). I thought I would drive it but after reflection I do not want to endanger other people if my brakes fail. This is a clear violation of the public trust that these cars are yet on the road.

My 2013 Toyota Prius has a failed inverter/converter assembly, including the Intelligent Power Module (IPM). This component is critical for vehicle operation and designed to last the life of the car. Premature IPM shorting and inverter failure is a known defect acknowledged by Toyota through multiple recalls and service campaigns for other VINs with the same part number. My vehicle is giving codes P0A94 and P0A1A which are also listed in the recalls for other Prius models of similar age. My vehicle experiences the same failure, yet Toyota has denied goodwill coverage, claiming “insufficient service history.” Routine maintenance like oil changes and brake inspections does not affect this component, making the denial unreasonable. There is nothing to service on the inverter. This defect poses a serious safety risk, sudden inverter failure caused total loss of power while driving and loss of power steering, it was difficult to pull my car off the road. This poses a danger to drivers, passengers, and others on the road. Toyota’s exclusion of my VIN from coverage leaves me financially responsible for a known safety defect. I request NHTSA to investigate Toyota’s handling of inverter/IPM failures, the denial of goodwill assistance for affected VINs, and ensure that Toyota addresses this life-threatening defect consistently across all affected vehicles instead of narrowing the scope on who gets coverage when this is a dangerous electrical malfunction.

The contact owns a 2013 Toyota Prius C. The contact stated that while driving at 25 MPH, the vehicle stalled and failed to restart. The contact stated that he and his wife were in the vehicle during the failure, and the vehicle was almost crashed into. The contact stated that he and his wife were left stranded in oncoming traffic. The vehicle was towed to the dealer, where it was diagnosed that there was a computer failure and that the inverter converter assembly needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 75,421.

I am experiencing the issue described in the BRAKE BOOSTER AND BRAKE BOOSTER PUMP ASSEMBLIES recall issued by Toyota for the Prius, which for me ended in 2023. The vehicle is unsafe to drive without performing this $4000 repair (dealer cost), which is almost more than my car is worth. Toyota should issue another extension for the repair coverage since they are known to be faulty. The previous recall and extension of the recall can be found here: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

failure of the Intelligent Power Module (IPM) within the inverter assembly

The contact owns a 2013 Toyota Prius. The contact stated there was a constant beeping sound while attempting to depress the brake pedal while slowing down. Additionally, the brake pedal was very firm, requiring added for to be depressed. The vehicle was taken to a local dealer to be diagnosed, and the contact was informed that the brake booster assembly, brake master cylinder, and the brake booster pump were faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 119,000.

A very common issue with 2012-2015 models caused by a defective part that causes the brake fluid to leak into the brake actuator causing an eventual DTC C1391 error code that Toyota previously had a recall and warranty on the parts. ABS has failed, traction control is non-responsive and the brake light is on. This is an issue that Toyota was previously aware of and only recently discontinued their “extended” warranty for the failed parts - despite this occurring in the upper mileage life of the car. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

There has always been this ringing sound when releasing the brakes. I had it looked at and was told there was no issue. Then while driving it felt like the brakes locked and all of the sensors came on the dashboard. I had those scanned and was told they were sensor issues but car started driving/braking ok. Few days later everything locked up. I can’t push the brake at all. I was told the Brake Booster Pump Assembly with Accumulator was shot. So i began research and saw hundreds of complaints for the exact thing in my make and model and year. This could have killed someone had it happened on a highway. This should be a recall, major issue that numerous are experiencing.

While driving on Highway 316E on March 31, 2022, at approximately 10am, at some point, as traffic started to slow down and I applied my brakes I was dumbfounded when my car would not stop! It was frightening, as I watched my car get closer and closer to the large truck in front of it. I kept applying the brake and then pumping the brake. The brakes kept failing and had no pressure or tension in them to stop the car. The brake pedal was flat on the floor. But, thanks to a sufficient distance between my car and the truck in front of it, it rolled to a stop just short of crashing into the back of said truck by an inch or two. Sometime in October of 2024 , I spoke with a Service Rep at Marietta Toyota about a whizzing sound that appeared to be coming from under the hood on the driver’s side. This sound would occur while I was driving and even when I turned the car off. It would continue making this whizzing sound sometimes for as long as 45 minutes after the ignition was turned off. I took the car back to Marietta Toyota and the service rep said the problem was related to the weather. On December 24, 2024, at around 11:00am EST, I parked my car in the parking lot in front of a print shop. The weather was clear, and the pavement was dry as I pulled my car into a clean, unfettered spot. Upon returning to my car, I could see a fresh puddle under the front passenger side. I ran my finger across the liquid that presented itself as a clean, thin oil that was as smooth as silk. It was odorless and sat in a pristine area looking freshly run out from the underside of my car. On February 27, 2025, when driving in the middle lane on Highway I-20 West, the ABS warning lights came on my dashboard screen along with the image of a skidding car. I was frozen with fear and did not know what would happen next. I would have to cross over multiple lanes to exit off Highway 1-20. I put on hazard lights and drove at 25-35 mph. Took car in for diagnostic and repair.

For last 4 years i have been noticing a hissing sound when brake pedal is pressed. At first it was unclear to me where it could be coming from, and no indicator light has triggered. I have brought this to the attention of toyota dealership when i first noticed it and the individual couldn't really make out what it was. The sound has now gotten worse, and upon further studies i am learning that there was indeed a recall pertaining to the brake booster and actuator, but my car for some reason is not included. This is a major safety issue and i expect toyota to help resolve. Please help.

Recently the dash board lights started intermittently coming on. When they are on, the brakes do not work until pressed all the way to the floor and even then the car takes a long time to stop. The lights will randomly turn off and suddenly the car brakes work normally again. It is happening intermittently with no rhyme or reason as to when it will happen. It's scary to drive because I dont know if the brakes will work or not and I almost ran into another car when trying to stop at a stop light. I took the car to be inspected at the Toyota service center for $190 and after inspection they said the brake booster and master cylinder assembly need to be replaced and it will cost $2300.

Pulled out of the driveway drove about a 100 ft heard large clunking sound front end dropped down as if there was a flat tire pulled off the highway drove through the grass 100 ft back to my home the car started smoking from the engine compartment and burst into flames. Tried to extinguish with fire extinguishers and water hose while calling 911. Fire Department extinguished the fire. Car is a complete loss. There was an oil leak trail from where the car first drop down through the grass. The car did not have a previous oil leak. The car had 300,000 miles on it. No one was injured.

Break booster issue. Car only has 63,465 miles. Toyota has received reports about certain internal malfunctions of the brake booster. Problem is, not many have had luck getting the part covered because it's likely that the problem does not commonly present itself until after the warranty expires.

The ABS system has failed, and I have to pony up $3000 + for repair, since the warranty extension from Toyota has expired - 10 years since first use (even though I have only had it for 5 years). I have less than 150,000 miles on this car, which is the the other parameter for service coverage for this problem. Toyota knows these parts fail, and they extended the warranty, BUT there is no recourse if your car is over the 10 year limit, even if under the mileage limit. it is a safety issue and should be addressed no matter the age of the car. I can't afford the cost of repair and so will gamble on not needing to use the antilock brakes.

Require replacement of brake booster pump, decreased braking ability

My prius have a scan code: C1391 and my brakes don’t work good i almost crash. And I traying to see what happen online but i see hundreds and hundreds, of prius with this problems, you need to do something and do a Recall. This is a recurring problem with Prius models, and they never do anything about it. It seems like Toyota is paying someone not to do the recall.

6/12/25 I'm driving my 2013 Prius w 123K m through a construction zone. The road became bumpy and when I depressed the brake nothing happened. Thinking I must have hit air or be imagining things I tried the other pedal. The acceleration re-oriented me to the fact that my brakes were non-existent. Many lights I've never seen illuminated on the dash as I looked into my mothers eyes to say we had no brakes. I was somehow able to pull safely. After the initial loss of braking I discovered I had a small amount of stop if I put the pedal on the floor. The closest local shop thought most of the internal braking system related to the pump and actuator would need to be replaced but requested I get an opinion from Toyota. At drop off I had requested they top off the brake fluid, despite their informing me that was never necessary. Perhaps this repressurized the system because upon visiting the car all dash lights were off and the brakes felt normalish. The shop did not know why. This is my only transportation.At 9:30 in the AM 6/14/25 I proceeded to the closest Toyota dealership w the safest direct route slowly with hazard lights and lots of space from other cars. While waiting for diagnosis I discovered this exact issue was a known defect and had been the subject of a class action lawsuit and customer service bulletin of which i had no notice. Since 2022/2023 the car had been briefly and consistently losing traction over minor bumpy conditions. Without notice of the issue I had no way to know this was a precursor to Total brake failure. This car was serviced at 3 Toyota dealerships during the extended warranty authorized by the CSB. I was never apprised of the potential issue, and expressly requested a list of recalls related to my vehicle at Lumberton Toyota in 2022 which they refused to provide. I therefore googled recalls, but this issue was not a recall. I have never heard of a CSB. Two Toyota dealers quoted me the full price to replace the braking system, $3,273.94.

my 2013, Toyota Prius recently suffered a sudden hybrid system failure with DTC space P0A0F and a check hybrid system warning. This matches the symptoms described in NHTS a safety recall 20V369000. Your recall look up tool shows my Vin is not included. However, I have never received this recall repair, and my failure is identical to the documented safety issue. I am requesting help in getting Toyota to complete a goodwill repair or warranty extension review as this is clearly a safety related inverter failure for which Toyota has acknowledged responsibility and similar vehicles.

Brakes failed to provide sufficient power to stop car. Towed to garage where FIXD was plugged in OPBD port and received code "C1391." Cost to replace parts and labor is $3,002.42.

I wash my car at the car wash and when I got back in a bunch of the dash lights were on including the ABS light traction control and I had no brake pressure. I took it to the shop and they said my brake booster had failed and it was going to be $3,000 to fix it went out do I have any idea now okay

My vehicle displays the anti-skid light when brakes are applied. I also hear a chirping noise and brake pump activation noise when the vehicle's brakes are utilized and as the vehicle is stopped. Information on the internet indicates this is a serious issue with the Prius Gen III brake system, requiring replacement of the hydraulic brake booster and pump. This brake failure should not be happening, and Toyota has already identified this problem. This Prius has been trouble free up to this point and has ~185,000 miles.

My electronic brake booster failed at just under 215000 miles, causing a brake line to snap. I now have to get the car towed 40 miles at my expense for a costly replacement of this major component, which Toyota already conceded was faulty by virtue of extending the warranty to 2023.

Hybrid System fail safe. I was driving on the highway and the car started to slow down on its own. There were no warning signs. I was able to pull over in time. I turn my car off and when I try to start it, it stalled. I couldn't drive off. Three hours later Hybrid System Fail error appeared, stating for me to pull over. I could have gotten in an accident.

Toyota defective ABS system- revised master cylinder&brake booster pump never changed by dealership except misleading inspection and breach of recall in 2020. The incident happened last year in Sep 2024 dangerous on hwy or freeway. Thank got I was on the side street with beeping vehicle and codes on the dashboard, barely with serious risk went back home! As a defective parts they should be replaced for free or customer should received reimbursement! A professional dealer who performs  ONLY AN INSPECTION for a “recall” in 2020 should replace the factory-damaged part and not brazenly wait for the codes to appear on the dashboard, depriving the customer of free replacement of the factory-defective ABS system. "the complaint was originally filed over the Toyota hybrid system problems in Feb. 2020, presenting claims on behalf of owners of certain 2010 through 2015 Toyota Prius and Prius PHV, 2012 through 2015 Toyota Prius V, 2012 -2014 Toyota Camry Hybrid and Toyota Avalon Hybrid vehicles that contain the defective braking system" ... This complaint accuses Toyota of placing PROFITS before the lives and safety of hundreds of thousands of drivers and passengers whose brakes are defective, but must wait for the potentially life-threatening brake booster defect to occur before the manufacturer will address it. The lawsuit ; ;"presents claims of breach of warranties, false advertisement, illegal sales practices, fraudulent concealment, unfair and deceptive trade practices, unjust enrichment and various other allegations on behalf of hundreds of thousands of impacted vehicle owners across the nation". Similar problem with defective piston rings in my engine which was burning oil under 85-87k based on NEW WORLD ORDER which cost catastrophic engine failure in so many brands and models -2010-2025 Toyota is playing idiotic game about defective products/parts from Toyota Motor Corporation #8rebuild engine [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

CODE C1391 - Brake booster assembly failure

Last year, the brake light failure came on the dashboard. I brought the car to a repair shop they diagnosed the problem as a rusted brake line on the passenger side. Bill approximately $700 for the repair. Over the last weekend, I was driving near my home, and the same indicator lights came on. I drove home and when I got home, noticed that there was brake fluid on my garage floor. I checked the brake fluid level there was none detected. I filled it up with brake fluid and waited until the next day, and the level seemed stable. I started the car to bring it to a local repair shop. No more indicator lights were showing. The repair shop said it was the driver's side brake line that had rusted out. $400 for it to be replaced. I reported this to Toyota today. Reference Number #250516001403

Vehicle warning lights for brakes, ABS and traction control all on while driving. Per mechanic, known problem on Prius and repair cost is $3-$5K. Covered by a prior customer support program but has expired. I have two Prius’s with the identical problem - bill will be up to $10K Error codes C1391, C1214

Brake accumulator suddenly failed in vehicle. Known issue from manufacturer

Vehicle warning lights for brakes, ABS and traction control all on while driving. Per mechanic, known problem on Prius and repair cost is $3-$5K. Covered by a prior customer support program but has expired. I have two Prius’s with the identical problem - bill will be up to $10K. Error code C1391

the abs booster/master cylinder has failed due to an internal leak causing the accumulator pump to constantly run and sets a c1391 dtc. the brakes work poorly and has a stiff pedal feel. braking is definitely reduced. this issues has not been seen by any dealer, shop, or agency yet. I was a toyota certified Master Diagnostic Technician for years before i quit to be a stay-at-home dad and am more than qualified and capable to accurately diagnose this. in addition, toyota has a CSP out (ZGB) that covers this, but the coverage needs to be extended. this is a known very dangerous failure that should be covered for much longer. i did notice, what i thought was an over-frequent cycling of the accumulator pump, but since i had just purchased the vehicle, it was hard to tell how out of the norm it was.

CODE C1391 for leak in brake accumulator pressure. All brake system lights flashed (e-brake, traction control, ABS).

The brake booster pump assembly has been failed.everytime I tried to stop the. vehicle the brake pedal will go to the floor and it will take longer to stop the car. IT has been inspected by my mechanic and conformed the problem

failure of the brake booster system resulting in no ABS function, appears to be a common problem with this vehicle.