Toyota Grand Highlander LE/XLE 2024 — Reported problems

The air conditioning system on my 2024 Grand Highlander failed due to a punctured AC condenser caused by road debris passing through the front grille during normal driving. The front fascia has large open apertures with no protective mesh or screening, leaving the condenser, radiator, and other heat exchangers directly exposed to rocks and debris. The condenser face shows multiple debris strikes, with one impact puncturing the core and causing complete refrigerant loss and AC failure at approximately 62,000 miles. The vehicle worked normally when parked and the AC was completely dead one week later due to the slow refrigerant leak from the puncture. Diagnosis was performed by [XXX] Toyota in [XXX], which confirmed the puncture was caused by road debris. The repair is not covered under warranty or my extended service contract because it is classified as outside damage, leaving owners to pay out of pocket for a design vulnerability. This is the same failure mode described in open ODI Defect Petition No. XXX covering 2024-2026 Grand Highlander vehicles. The same unprotected grille openings expose the engine radiator, meaning the identical debris path can puncture the radiator and cause coolant loss, engine overheating, and sudden loss of propulsion in traffic. The grille design leaves critical cooling components unreasonably vulnerable to everyday road debris. Photos of the punctured condenser and the dealer's written diagnosis are available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I own a 2024 Toyota Grand Highlander Hybrid MAX Platinum, purchased brand new in February 2024 and now with approximately 30,400 miles. Since the first few weeks, the vehicle has had an ongoing fuel tank/range issue. The fuel tank is rated at approximately 17 gallons, but the gas pump consistently shuts off after only 10–12 gallons, even when the vehicle indicates 0 miles to empty. It accepts approximately the same amount whether I refuel with 80, 20, or 0 miles remaining. After filling, the vehicle reports the tank as full and but generally shows only 270–290 miles of estimated range. The actual miles driven before requiring fill up is 230-250 miles. Toyota issued T-SB-0060-25 (Low Fuel Warning Light Logic Enhancement), which a Toyota dealer reluctantly performed on my vehicle. It initially improved the displayed range by only about 10 miles, but did not resolve the problem, and the condition is now worsening. The dealer solution was to tell me I can drive another 60-100 miles past empty but I do not believe that is a reasonable or safe workaround. This is because the driver cannot reliably determine the remaining usable fuel or how far the vehicle can safely travel. The condition remains unresolved and is a known issue with other Toyota Grand Highlander Hybrid Max owners.

2024 Toyota Grand Highlander XLE FWD. At approximately 38,000 miles I began hearing a roaring/humming noise that varied with vehicle speed. The condition initially progressed slowly but then became much worse within several days. At 41,510 miles a Toyota dealer diagnosed and replaced the right rear hub/wheel bearing assembly. I was advised that the failed bearing was nearly seized when removed. After replacement the noise was reduced but remained present. The dealer was uncertain whether another bearing was failing and initially believed the remaining noise could be tire noise, advising me to monitor it. The noise again deteriorated rapidly and became severe enough that I considered the vehicle unsafe to drive. At 42,223 miles the same dealer diagnosed and replaced the left rear hub/wheel bearing assembly. The noise disappeared after replacement. Both rear wheel bearings therefore failed at approximately 40,000–42,000 miles within about 700 miles of each other. The vehicle has no known accident or suspension damage and the dealer identified no other condition causing the failures. I am concerned that rapid deterioration or seizure of a wheel bearing while driving could result in loss of vehicle control.

400lb animal strike, no warning lamps on, sensors was replaced from Toyota Ashland KY last year. My wife and 14 year old daughter was in the front seats. Traveling speeds was 55mph zone was traveling approx 45mph.

If my car has been sitting for a while, especially in the heat, and occasionally at random times, when you get in the car and press the gas, the car will not move. This happened twice where I was almost put in a very bad accident. There is a very hard intersection near my son’s school. I have to take a left hand turn- and you have to be quick because there is no light. I turned left and my car would not go- I was stuck in oncoming traffic and the car would not move whatsoever. It was very dangerous and very scary. This has happened where it almost caused a very bad accident becuase the gas pedal would not move the car. The dealership couldn’t replicate and said it wasn’t an issue. But it is continuing to happen, and it is very dangerous. Maybe it has something to do with the battery getting hot and somehow power doesn’t get to the gas/engine e

When ambient temperature are over ~90 the vehicle will lose power during acceleration. This happens typically in the speed range of ~20-35mph. The vehicle’s rpm will spike high but lose the ability to increase speed or shift gears. This occurs ~ 40-50% of the time when over 90 degrees. On several occasions we were forced to abandon merging onto the highway because the vehicle wasn’t safely able to accelerate to match the speed of vehicles on the highway. We reported this issue to our local Toyota dealer September 2025. After reviewing the vehicle they said nothing was wrong. We had them drive it longer and they agreed the vehicle had these issues. The dealership spoke with Toyota and they confirmed there was an issue for our vehicle and a lot of others and they had no fix for it. That was September 30, 2025; Toyota Brand Engagement Center Reference # 250923001413. There has been no communication from Toyota or our dealer since then. The safety issue with the vehicle is a major concern in operation of the vehicle and with the hot climate we live in, is putting our occupants and others on the road at risk and we feel Toyota needs to be held accountable for finding the issue(s) and correcting them.

At 5:16 pm, CST. I was stopped at a stop sign headed west on a 25 mph road crossing a 30 mph road (that does not have a stop sign) in Illinois. After waiting for a an appropriate gap in traffic, I attempted to accelerate though the interesting. I released the brake pedal and attempted to accelerate. The vehicle barely accelerated. The engine seemed to minimally climb in RPM and only accelerated minimally out into the cross road. This lasted approximately 1-2 seconds. AT this point I was fully into the first lane of traffic. I then fully depressed the accelerator to try to get the vehicle to respond and after approximately a 0.5 to 1.0 second delay the engine fully responded and I was able to accelerate out of the oncoming cross traffic. This is by no-means the first time this behavior has happened with this vehicle but it is the first time I'm reporting it to the NHTSA.

Horrible gas smell on the interior and exterier of vehicle after fueling up.

The vehicle’s A/C suddenly began blowing hot air. We took it in for diagnosis. The technician asked if the vehicle had been in an accident, if the front had hit anything, or if we had noticed hitting a rock or other object. We answered no to all questions. The technician stated they have seen this issue numerous times, where road debris passes through the large openings in the factory front grille and damages the A/C condenser. The condenser was found to have localized physical damage of approximately 1 cm in size, consistent with an impact from a rock or other road debris. The impact cracked/punctured the condenser, causing refrigerant to leak from the sealed A/C system and the A/C system to stop functioning. The condenser requires replacement. We researched this issue and found other Toyota owners reporting similar condenser damage from road debris entering through the front grille. We understand that road debris and normal wear can occur, but our concern is that the large factory grille openings allow ordinary roadway debris to directly reach the condenser, with inadequate shielding or protection. A $1,700 repair for a condenser that can be damaged by ordinary road debris entering through the factory grille openings is a significant and potentially recurring expense. Consumers should not reasonably expect to repeatedly incur this level of repair cost because a critical component is inadequately protected from normal roadway conditions, particularly when the vehicle is also covered by an extended warranty that does not cover the repair. This issue also appears relevant to NHTSA Petition DP26006. We ask NHTSA to investigate whether this design leaves the condenser unnecessarily vulnerable to normal roadway debris and whether other vehicles are experiencing the same problem. While the immediate result is loss of A/C, we are concerned about the broader safety implications of critical vehicle components being vulnerable to damage under normal driving conditions.

I currently own a 2024 Toyota Grand Highlander with the 2.4L turbo engine, which I purchased in July 2023. I have been experiencing a strong gasoline/fuel smell coming from the vehicle. I took the vehicle to Fox Toyota in El Paso for inspection. According to the dealership, the smell was caused by the gasoline I was using and they stated that the fuel contained too much ethanol. However, the gasoline smell was strong enough to be concerning, and I am not comfortable simply assuming that the fuel is the cause without further inspection. At this time, I have not been given a specific diagnosis identifying a failed component or confirming that a particular fuel-system component is malfunctioning. The vehicle is available for further inspection if requested. The strong gasoline odor raises a safety concern because the presence of fuel vapors could potentially indicate a fuel leak or another problem with the fuel system, creating a possible fire hazard. The problem was reported to and inspected by Fox Toyota in El Paso, but the dealership attributed the odor to the ethanol content of the fuel rather than identifying a defective component. I have not had the vehicle inspected by the manufacturer or any other independent facility at this time. I have not observed any warning lights or warning messages associated with the problem. The primary symptom has been the strong gasoline smell. The vehicle has the 2.4L turbo engine. I would like to know if other 2024 Grand Highlander 2.4L turbo owners have experienced the same issue and, if so, what the actual cause was and how it was resolved.

Multiple times a week in the summer my car will hesitate to go once I have stopped at a stop sign/busy four way intersection. When I push the gas the car doesn’t respond and hesitates for a long while before I can get the car to start moving again. The car will roll into the intersection after I take my foot off the break to go and it won’t do anything. It is terrifying and confuses other drivers around me thinking that I am letting them go. This has happened upwards of 20 times since I have had the car. It happens only on hot days when the external temperature is above 80 or so degrees and happens when car is freshly started. It reliably happens when I go up a pretty small hill by my house about 1 minute after starting the car (even when it is coming from being parked in my garage). Joseph Toyota on Colerain in Cincinnati has not been able to reproduce the issue. I drive with two children in the car and it is so scary when it happens because I have almost been hit with them in the car many times now.

A/C condenser damaged and broken caused by open grill design.

The engine would not engage for 4-5 seconds when pulling out of my neighborhood. Gas pedal was all the way down and after a delay, the car rolled forward as if trying to start in 2nd/3rd gear. I am a cautious driver, but this is an unsafe scenario when pulling out into traffic.

Damage occurred to the front air conditioning system because a rock flew through the open grill area. This punctured the system causing a couple thousand dollar repair, not under warranty. The car was nearly brand new at the time. The grill area is a problem, it's a bad design.

My coolant evaporates . I think a tick hit through grill and damaged the heat exchanger. I have to fill the coolant monthly

Sometimes, when trying to accelerate in certain situations, the vehicle accelerator pedal will not respond or the engine stutters and won't immediately respond to input and the vehicle seems to stall. This has been scary several times in traffic. The vehicle originally would throw an engine code on the dash about system failure and was taken into the dealer after several of these incidents and a software updates was performed, but it still happens randomly although now with no code.

The car stalled on entering secondary roads from my own neighborhood. When it happens, I have pressed the throttle and the car stops moving forward. It takes 5-10 seconds before the engine picks up and the car moves. The first owner found the same thing and now as the second owner, it has done the same thing.

The hybrid inverter cooler failed due to an impact with what was described as a rock or road debris shooting through the front grill and striking the inverter cooler so that it leaked coolant and failed. There was no notice of impact, while driving on the highway the hybrid system rapidly went into shut down/safety mode and acceleration and power to the drivetrain of vehicle dramatically reduced. This took a matter of seconds while on the highway without any warning. The problem, cause, effect, and repair was all diagnosed by a Toyota service personnel at a Toyota dealer. It was reported that this is a common issue with the grill design.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that while making a right turn from a complete stop to merge into traffic, the vehicle hesitated and failed to exceed 7–10 MPH. The contact released and then depressed the accelerator pedal again, and the vehicle responded as intended. No warning light was illuminated. The vehicle was taken to the dealer, where software updates were performed on several occasions; however, the failures persisted. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 800.

While driving on a highway at highway speed of approximately 62 miles per hour, a rock from the highway went through the front grille's hole, and punctured the area of the radiator, resulted in a large loss of coolant, and the vehicle's speed suddenly lost highway speed and lost propulsion on the highway, while driving at a highway speed. Thankfully noone was driving behind me. However, If someone was behind me, they would have hit me from the rear due to my loss of propulsion.

During driving on a highway at highway speed (not off-roading), A road debris or rock went through the front grille's hole and damaged the cooling system which leaked coolant and i experienced a loss of power and propulsion while driving on highway, as a result of this issue.

Road debris from normal driving on paved roads (perhaps related to a trip from Flagstaff to Phoenix on [XXX] in April 2026- in Phoenix the AC took a very long time to cool down the car), road debris punctured the ac condenser. The AC stopped working entirely in July of 2026, so it was taken to Findlay Toyota Flagstaff for review. They noted all refrigerant had leaked from the system, and that road debris had punctured the condenser. The warranty claim was denied, and I paid about $1450 out of pocket for a new condenser and system recharge. I have the estimate from the dealer along with the receipt for the actual repair; however, the file upload functionality of this app is not working. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

A rock went through the grill and pierced the AC condenser. The result left us with no AC. Toyota of Grand Rapids charged us $2300 to replace it. The holes in the grill are massive. Toyota of Grand Rapids has a video on file documenting the issue.

I had my car for service to be replace the wheel bearing on the right passenger side. Two weeks after my cooling engine light came out. Took to the dealership and they said there is a leakage in the radiator and needs replacing.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that while driving at an undisclosed speed, there was an abnormally strong gasoline odor inside the cabin of the vehicle. The contact believed that the odor was caused by a fuel leak. The vehicle was taken to a dealer, where it was diagnosed with an evaporator filter failure, and it was determined that a fuel leak was not the cause of the odor. The dealer stated that the vehicle did not require a repair and could still be driven with the odor inside the vehicle. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 45,000.

Vehicle intermittently fails to accelerate when accelerator pedal is depressed after stopping. Vehicle may move extremely slowly for several seconds and then suddenly regain power. This has occurred while entering/intersecting traffic and has resulted in near-collision situations. Dealer cannot duplicate the problem.

I have a 2024 Toyota Grand Highlander (FWD Gas) with about 37,000 miles and had 2 wheel bearings fail - front right and rear right. I noticed a constant humming noise starting around 20-25 mph that increased with vehicle speed. Thinking it was tire noise, I replaced all 4 tires, and the sound was still present. The dealership first replaced the right front bearing, and when they drove it after the repair, they noticed the sound decreased but did not eliminate the noise, and they further diagnosed a failed rear wheel bearing.

See attached Citizen's Petition Letter

My vehicle has a recurrent issue with failing front axle assemblies. The vehicle experienced rotational clicking and had both from axle assemblies replaced around 20,000 miles. Around 40,000 miles the clicking returned and toyota has refused to replace the failing axles again. I currently am at 63,000 miles and I won an arbitration case regarding the axles. The arbitration decision ordered toyota to replace the axles and determined that the parts were defective and covered under warranty. Toyota breached the arbitration and refused to replace the defective axles as ordered in a legally binding arbitration. Rotational clicking is more apparent at low ambient temperatures. A metallic grinding is more apparent at high ambient temperatures. I have had several drive train skips, a sensation of drive train parts slipping and slamming together. Toyota knowingly put defective parts back on my car during the 20,000 mile repair. Toyota release a technical service bulletin T-SB-0082-24 in sep of 2024. It stated that they redesigned the axle to fix the problem. The tsb said to put the original part number on instead of the updated, fixed part number. I received the old, broken part number when my repair was done in 2025. There is a new bulletin T-SB-0028-26 release in april 2026 for the same issue and it states that the previous bulletin is obsolete. The new bulletin states that the correct part number is the new part number not the old one. Additionally, the tsb indicates toyota changed to the new part number with a vin cutoff sometime in 2024. The fixed part number was changed at the production line level in 2024 yet I received the old, known defective part. These are drive axles and a failure can lead to loss of control and a serious accident. A full investigation and recall of this part should be conducted.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that the vehicle unexpectedly lurched forward while depressing the brake pedal. There was no warning light illuminated. The contact stated that excessive pressure was needed on the brake pedal to prevent the failure. The contact stated that a service appointment was scheduled with the dealer. While conducting independent research, the contact identified Technical Service Bulletin: T-SB-0028-25, which was associated with the vehicle shuddering while at a complete stop, and believed that the failure was associated with the technical service bulletin. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 39,000.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that while at a stoplight and attempting to drive forward, while making a left turn, the vehicle experienced a momentary unintended acceleration and lurched forward. The contact immediately depressed the brake pedal to stop the vehicle. The cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 40,544.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that while driving at an undisclosed speed and turning the steering wheel to the left or the right, occasionally there was a clicking sound coming from the vehicle. The dealer was contacted and diagnosed the failure as an axle failure. The vehicle was repaired, but the failure reoccurred approximately two to three months later. The vehicle was repaired five times due to failures. There was no sound coming from the vehicle after the last repair. The manufacturer was not made aware of the failure. The failure mileage was approximately 5.

The contact owns a 2024 Toyota Grand Highlander. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate immediately while the accelerator pedal was depressed. The vehicle then accelerated and lurched forward while entering traffic. There was no warning light illuminated. The vehicle was taken to the dealer; however, the vehicle was not yet diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 18,000.

I own a 2024 Toyota Grand Highlander Platinum Hybrid MAX with approximately 34,000 miles. The vehicle has experienced repeated delayed or absent acceleration from a complete stop, creating a serious risk when entering traffic. Before the most recent repair, I reported intermittent hesitation to the Toyota dealer. On Sunday, July 12, 2026, shortly after startup, the vehicle hesitated twice within the first half mile. At the second stop sign, I attempted a left turn into traffic and applied approximately 30% accelerator pedal. The engine was running, but the vehicle only crept forward at idle-level power for approximately three seconds. There was no noticeable increase in engine RPM and no warning lights. Normal power then returned. On July 15, 2026, the Toyota dealer performed TSB T-SB-0017-24 and updated the engine-control software for hesitation during acceleration. After that repair, the same loss-of-acceleration condition happened again while my wife was leaving a parking lot. She was stopped at a stop sign, making a right turn into traffic on a slight uphill grade, when the vehicle failed to provide normal acceleration. This was substantially similar to the earlier incident and occurred after the software update intended to correct the problem. The repeated failure to respond to accelerator input from a stop creates a collision risk because the vehicle can begin entering traffic without providing the expected power. I am requesting that NHTSA investigate whether this is a broader safety defect affecting the Grand Highlander Hybrid MAX and whether the existing software repair is effective.

I've had consistent issues with the vehicle accelerating and shifting. These include sluggish acceleration, loss of power and sputtering when we've come to a complete stop and starting to move again. We've almost been hit by other vehicles at least over 20 times because the vehicle has failed to accelerate when pulling into a roadway. The car hesitates during acceleration regardless of how much I push the gas. Once it starts to go, it feels as though the car can't shift from 1st to 2nd gear, The RPMs get extremely high while the car is going 25-40 mph and remain there for a few seconds up to ~20 seconds. I am fearful of getting t-boned when my car hesitates while turning at an intersection, going through an intersection or pulling out from a parking lot. I have been stuck in several intersections when traffic was coming toward me, but thankfully those cars had patience and avoided us. I've also found that this issue always happens when the hybrid battery shows that it only has a charge of 3 bars. It seems that the engine, transmission and hybrid battery don't know how to communicate when the battery charge gets that low. This has been happening since Dec 2023 when I bought the vehicle and the dealer has never been able to duplicate or find any error code, they are refusing to fix a known issue when many others are experiencing the same issue. There are Toyota Technical Service Bulletins (TSBs) out there regarding this problem but my dealer told me they won't do anything as it could label my vehicle a lemon. This is creating an unnecessary safety risk for me and my family.

The passenger-side second-row bench seat (60 percent section of the 60/40 split) has a defective seat track/latch assembly that fails in both directions: it seizes completely when it should slide, and it failed to stay latched while the vehicle was in motion. The seat saw almost no use for the first 34 months of ownership (third row kept folded). Within two weeks of its first regular use (XXX, approx. 45,700 miles), it seized completely and could not be moved in either direction. An authorized Toyota dealership in Placerville, CA disassembled the seat and documented in writing that the seat track was twisted and rubbing against the seat frame. The dealer straightened the track rather than replacing it and stated on the invoice that if the seat stopped moving again, both seat tracks should be replaced and the seat frame itself may need replacement or adjustment. After that repair, in approximately mid-June 2026, the bench slid FORWARD on its own as my wife braked for a stoplight, the track failed to remain latched with the vehicle in motion. Two rear-facing infant car seats are installed on this bench, and our toddlers reach the third row through this seat. On XXX (approx. 46,416 miles, 33 days and about 700 miles after the repair), the seat seized again. The vehicle is currently at a second authorized Toyota dealership in [XXX] for diagnosis and is available for inspection upon request. Safety risk: a second-row seat that does not remain latched cannot properly restrain occupants or anchored child restraints during hard braking or a crash, and a seized seat blocks third-row access and egress for children, including in an emergency. There were no warning lamps or prior symptoms before either failure. Note: NHTSA recall 26V128 covers 2021-2024 Highlander second-row seats that fail to lock; this Grand Highlander is not included in that campaign but exhibits a similar failure to remain latched. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driving down the highway and the sunroof exploded

On a recent road trip I experience loss of acceleration twice. I was at a stop sign making a left hand turn. I step on the accelerator it start forward but then stop suddenly leaving me in the 1st lane of on coming traffic. I smashed on the accelerator several time before the vehicle finally responded. I took the vehicle to the dealer on 6/30 told the dealer what had happen along with my google findings acceleration hesitation and sudden lurching in the Toyota Grand Highlander Hybrid MAX Technical Service Bulletins (TSBs), including T-SB-0017-24. The dealer could not duplicate or find any error code, they are refusing to fix a known issue. They are creating an unnecessary safety risk for me and my family.

While driving my 2024 Toyota Grand Highlander Hybrid AWD at highway speed with only 16,755 miles on the vehicle, multiple warning messages suddenly appeared, including warnings related to the engine, hybrid system, AWD system, and other vehicle functions. The vehicle instructed me to pull over immediately and significantly reduced power output, making it difficult to maintain highway speed and safely maneuver through traffic. I was able to reach the shoulder and had the vehicle towed to a Toyota dealership. The dealer diagnosed a punctured radiator caused by a rock or similar road debris that allegedly passed through the front grille and struck the radiator. The dealer confirmed that coolant loss from the puncture triggered the vehicle's protective reduced-power mode. This failure created a significant safety risk. A sudden loss of power while traveling at highway speed increases the risk of rear-end collisions and other accidents, particularly in heavy traffic where drivers may not expect a vehicle to rapidly decelerate. There were no warning lights, messages, leaks, drivability concerns, or other symptoms before the incident. All warnings appeared suddenly at the time of failure. Toyota has declined warranty coverage, classifying the damage as a road hazard. However, I believe this may indicate a design defect. I have identified numerous reports from other GH owners describing nearly identical failures involving rocks penetrating the radiator through the front grille, often at relatively low mileage. These reports suggest the radiator may be inadequately protected from ordinary roadway debris. My concern is not simply radiator damage, but that a small piece of road debris encountered during normal driving can disable a critical component and cause the vehicle to enter a severe reduced-power mode at highway speed. I request that NHTSA investigate whether the front grille and radiator protection design of the Grand Highlander creates an unreasonable safety risk

Vehicle: 2024 Toyota Grand Highlander Hybrid Max The vehicle intermittently experiences a severe hesitation and shudder during acceleration from approximately 0-40 mph. The condition occurs only under specific circumstances: -The vehicle has been parked long enough for the engine, transmission, and related systems to cool to ambient air temperature. -The vehicle is started and driven shortly thereafter. -Engine oil and transmission temperatures are below approximately 160°F. -The air conditioning system is operating at maximum cooling with Eco Air Mode enabled. -The hybrid battery indicator displays approximately three bars of charge. When these precise conditions are present, the vehicle may hesitate, shudder, and fail to respond normally to accelerator pedal input during acceleration. Even with the accelerator pedal fully depressed, repeatedly, there is a noticeable delay in power delivery and vehicle acceleration. This creates a situation where the vehicle does not accelerate as expected when entering traffic or attempting to increase speed. The vehicle has previously received Toyota Technical Service Bulletin T-SB-0017-24; however, the condition continues to occur intermittently. No warning lights, diagnostic messages, or system faults are displayed when the event occurs. The condition typically occurs only once during the initial drive cycle after a cold start and has not been observed after the vehicle reaches normal operating temperature. The issue is most common in the warmer months and has never been encountered at freezing or below temperatures.