Hyundai IONIQ 5 2025 — Problemas relatados

Second failure of the Integrated Charging Control Unit (ICCU) on this 2025 IONIQ 5. The ICCU stopped charging the 12-volt battery, leaving the vehicle unable to start. This is the second time the ICCU has failed and required replacement in approximately one year. The vehicle was towed to the dealer. ICCU failure can cause a loss of drive power while driving; this failure was discovered while parked. Earlier model years (2022-2024 IONIQ 5) are covered by recall 24V-868 for this same defect; this 2025 vehicle is outside that recall population and has now failed twice.

On XXX, while driving my 2025 Hyundai Ioniq 5 on a local road, the vehicle suddenly lost power and would not accelerate beyond 40 MPH. There was no prior warning. I had not yet merged onto the expressway. Had this happened at highway speed, I would have been unable to keep up with traffic, which would have created a serious risk of a collision. I continued driving at reduced speed until I could safely pull into a gas station. Once stopped, the instrument cluster displayed "Stop vehicle and check power supply." About 10 minutes later, with the vehicle parked and still on, it displayed "Check 12V battery. Stop safely and engage parking brake." Roughly 10-15 minutes after that, the vehicle shut down completely and could not be restarted. The vehicle was towed to Gerald Hyundai in [XXX] on that day. On XXX, the dealer confirmed that the Integrated Charging Control Unit (ICCU) and a fuse failed and had to be ordered for replacement. The vehicle is less than one year old. I am aware of numerous reports of ICCU and 12V battery failures on this model, and my experience is consistent with them. A sudden loss of propulsion while driving is a safety hazard, and I am concerned this defect can occur without warning at highway speeds. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am reporting a serious suspected brake malfunction involving my 2025 Hyundai IONIQ 5, VIN [XXX]. While driving straight on a wet road during rainy conditions, I pressed the brake pedal to slow down. The pedal felt soft and sank toward the floor, but the vehicle did not slow down or respond as expected. The vehicle continued moving, and an accident occurred. The vehicle sustained major damage and may be a total loss. I am concerned that the braking system may have malfunctioned. I am requesting that NHTSA review this incident for a possible safety-related defect affecting the braking system of the 2025 Hyundai IONIQ 5. I request that this complaint be considered alongside other reports of braking problems involving the same vehicle or braking components. I would like the vehicle and its braking system to be inspected before it is dismantled or disposed of, and I ask that relevant diagnostic information be preserved. Please investigate whether this incident may be related to a safety defect that could affect other drivers. Additional information, including the accident date, vehicle mileage, warning lights, and accident report, can be provided as available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am writing to document my case regarding my leased 2025 Hyundai Ioniq 5 XRT. Vehicle: 2025 Ioniq 5 XRT, VIN [XXX] Lease start / delivery date: Odometer: 4,368 miles Servicing dealer: Stevinson Hyundai, [XXX] Case number: XXX What happened: On Saturday, XXX, while I was driving, the vehicle displayed "Stop vehicle and check power supply" with the red 12V battery warning and the master warning light, and power was limited to approximately 25 mph. The high-voltage battery was at 66 percent. I was able to get the vehicle home at reduced speed, and Hyundai Roadside Assistance towed it to the dealer the same day. The symptoms are consistent with an ICCU failure, pending the dealer's diagnosis. Photos of the instrument cluster are attached. I consider a sudden loss of drive power at 4,368 miles to be a safety-related defect, and I have reported it to NHTSA. My situation: This is one of two vehicles in our household, and both of us need to get to work. The dealer is about 30 miles from my home. I am without transportation as of September 19. What I am requesting: 1. Written authorization for a rental vehicle starting immediately and continuing until my vehicle is repaired and returned, including the approved daily rate and how billing or reimbursement will work. 2. A parts availability check and estimated repair date as soon as the dealer confirms the diagnosis. 3. If the vehicle is out of service for an extended period, reimbursement of my lease payments for the time I cannot use it. 4. Confirmation of the warranty coverage that applies to the ICCU on this VIN, including any extended ICCU coverage. I am keeping a record of the days the vehicle is out of service, starting XXX. Please reply in writing so I have everything documented. Thank you for your help, [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driving at highway speeds, the front end feels unstable. It feels as if the tires are jumping around and will move the car to the right or left. It is difficult to maintain control. I had it into the dealer shortly after I bought the car to complain about what I thought was a front end alignment problem. They didn't think there was an issue until they got it into the shop. They said afterwords that it WAS OUT OF LINE. But their fix did not hold, so I went in again for the one year maintenace and mentioned the problem, but they said it was not out of line. Well, The problem still exists. Something serious is wrong and needs to be fixed.

Full electrical power system failure. Heard a loud pop noise emanating from under the rear seats of the car. The power. Failure lights came on and the car lost power. We were able to get the car to slowly drive back to the garage where it completely shut down and was inoperable from that point on. Car has been towed to the local dealer for diagnostics and repair.

On 8/30 my vehicle experienced a power loss on a highway (reported here separately). I took the car to the dealership and they could not replicate the error and gave the vehicle back to me on 9/4. Later that day I had to drive 2 hours north to a wedding in the mountains. At 9:30pm my vehicle experienced a full drive power loss on an unlighted, curving, rural 2-lane mountain road in an area with minimal cell phone service. I tried to restart the vehicle several times and could not get any power. I called roadside assistance and had to wait over 2 hours in the dark on a winding mountain road for the tow truck to find us and then be towed 40 minutes away to the nearest dealership where my car is still sitting waiting to be looked at (2 hours away from where I live)

Driving home near my apartment, I had to join a busy highway from a full stop. I found a small gap and tried to accelerate to quickly merge into traffic, when my car made a high pitched alert noise and noticably did not accelerate beyond about 25 miles per hour on a 45-50mph highway with heavy traffic. I turned on my hazards and still ended up with a line up of cars honking behind me. Flooring the accelerator did absolutely nothing to increase my speed. On slight downhills I could get up to about 40mph but as soon as it leveled off my speed went back down to limping along. I was able to exit the highway at slow speed and tried to parallel park in an avaialble spot but could not reverse. I tried to drive on toward my house but the car could not make it up the hill even with the full accelerator pedal down. People were stuck behind me on my street so I turned the car off and back on again and the car appeared to resume normal operation and I was able to drive up the hill. I took the car to the dealer and they were "not able to replicate the error". They did fix a seat belt recall and updated the software for my ECU and said to come back if it happened again...

While driving this EV with cruise control on, the dashboard suddenly showed a message that “Smart Cruise Control conditions not met”. Attempting to re-engage the cruise control did not work and then the vehicle suddenly lost all propulsion (pressing the accelerator did nothing). The car quickly slowed to about 20 mph before we could maneuver it to the shoulder and turn it off. After a couple minutes, we restarted the car and drove it to the dealer. There were no other messages or warning lights or indicators. The dealer could not find anything wrong and asked us to pick up the car and resume using it. We use both a home charger (Emporia) and roadside (Tesla) chargers.

I heard a loud popped sound from the back of my car while driving home. The car lost power and eventually died on the street. The war displacy came on to tell em to check electrical system. I originally bought th car from Capitol Huyndai in San Jose on September 2025 and it has 5992 miles. I towed the car to Dublin Hyundai for repair and confirmed the DTCP1A9096 for ICCU computer failing to charge the 12 v battery. It was a well known recall . I do not have any update on the repair since 8/25/26. I worry about my safety because the car can lose power while driving

My car starting throwing a “check electric vehicle system” warning intermittently beginning on July 7, 2026 which went away when I restarted the car. This happened again on July 27, 2026 three to four times while I was driving. The car did not lose power. As I was going to dealer the warning cleared and no code showed up in my diagnostic history. On August 12, 2026, the car once again showed "check electric vehicle system” and would initially clear when I restarted the car. I then began having intermittent power. Floored, the car would only go 27 mph. Then it would speed up again, then slow again. I was not in “turtle mode.” Luckily, I was able to safely get the car to the dealership without having an accident. DTC P1A8D13 did show in my diagnostics. The technician found that the 12v battery input had melted at the ICCU. This is very dangerous and could have led to a vehicle fire. My 2025 is on its 2nd ICCU (now 3rd) and has not had any recalls, so this is very troubling.

ICCU failure. Failure happened while merging onto the road from driveway. Upon failure, 12 V battery was drained and car was immobilized. Prior to car mobilization dash read “Check electrical vehicle system” then many different failures appeared on the dash, then the car shut down. This event left us stranded on the road, unable to move to a safer location. Issue was confirmed with dealer and part had to be replaced. Part was original to the car and issue is known by the manufacturer but not being dealt with publicly.

While driving on normal paved roads, a small vibration was heard from the rear of the vehicle. A person near the car when leaving the origin that morning heard a minor clicking sound at low speed from the rear of the vehicle. The vibration at that point seemed to be related to the rural mountain road that had some rutting. Continuing to drive, but onto better roads, the vibration became louder and louder, and appeared related to speed. Nothing appeared loose when stopping to charge. Vibration became loud (above conversation), stopped to inspect. Removed aerodynamic cover from lug nuts on right rear, and found two lugnuts completely sheared off (fell out when cover removed), with a third hanging on at less-than-finger tight. Vehicle driven slowly to safe location where it was towed to dealer. Dealer reported that the rim was bent in addition to sheared lug nuts as well as a damaged wheel bearing.

In June 2025, I started a lease on a new Hyundai Ioniq 5 SEL. On August 16, 2026, I attempted to start the car, but it immediately beeped and flashed a warning about the 12V battery (I didn't manage to take a picture). It then showed signs of an electrical issue, like flickering interior and exterior lights. It was undrivable. A short time later, there was no power at all. I took out the old 12V battery and measured the voltage with a multimeter, and observed 3.7V. After putting in a new battery, the car operated normally.

Two tires failed dramatically, (on two separate days, but separated by only 121 miles of driving), causing extensive damage the first time and causing a total loss the second time. The first tire has been disposed of, but the second is available still. Each was on the highway and luckily there was not much traffic so I was able to pull safely onto the shoulder each time. However, if I had not been able to get over, our safety and that of others was at risk if we had been involved in a collision. My safety and my that of my elderly, handicapped brother was at risk the first time especially, because this is an EV and at one point on July 4, 100 degree temperatures in the early afternoon in South Carolina, the electrical system had been damaged and we could not, for a few minutes, get doors or windows open. The components (tires) have only been inspected by repair shops. There was no warning either time. The tires are 235/55 R 19.

I started the car and got the warning "check electric vehicle system." The car then lost power. It would only go 27mph with the accelerator pedal pushed all the way to the floor. My safety was at risk because my car was not responding appropriately to driver input. The car is at the dealership as it is undriveable in this condition. This is the second incident with this vehicle within 6 months.

When I use the adaptive cruise control and use the lane keeping assistance the system keeps giving me an error message that I'm not looking at the road. I believe this is a known problem and Hyundai pushed an software fix TSB 25-G1-16H in November 2025. My car appears to have the update but still repeatedly gives me the same error message. It's very distracting and since the error message flashes on dash where you usually see the camera monitoring right side of car that feature is impaired. I have had at dealership twice and while the technician knows its an issue there's nothing they can do without Hyundai's decision to correctly fix with software update. I am over 6' tall and where glasses, two things I can't change.

My 2025 Hyundai Ioniq 5 experienced a complete and sudden loss of drive power at high speed, generating open fault code DTC P1A9096 (Internal ICCU Failure) [24V-204]. This failure completely matches the component and safety hazard profile under active Federal Safety Recalls 24V-204 and 24V-868 [24V-204].The vehicle was repaired at an authorized retail facility, Hyundai of El Cajon. The facility's un-finalized pre-invoice explicitly verified the ICCU failure code but deliberately omitted the federal safety recall context, routing the mechanical intervention under an internal manufacturer 'TSB 24-EV-004H' to hide the defect from consumer safety databases [24V-204].This represents a deceptive administrative effort to under-report active federal safety recall failures on newer model inventories across the E-GMP platform architecture [24V-204]. I am requesting a formal safety defect enforcement review into the manufacturer's regional reporting data.

While driving at 65–70 mph in rain, the vehicle emitted a repeated audible alarm from beneath the rear seat, then suffered a complete loss of motive power at highway speed. No warning light, message, or indicator appeared on the instrument cluster at any point. The vehicle was taken to an authorized Hyundai dealer the following day.

The vehicle was released to me as repaired by an authorized Hyundai dealer earlier the same day. While driving home, the vehicle entered reduced-power/turtle mode and lost propulsion capability. This is the third failure of the electrical/propulsion system in under three months on a vehicle less than one year old, and it occurred within hours of a warranty repair.

While operating the vehicle, the instrument cluster displayed a “Check electric vehicle system” warning with a red vehicle-with-exclamation icon. The vehicle failed to charge when plugged in; state of charge was 90%. The vehicle was towed via Bluelink to an authorized Hyundai dealer. No prior issues and no damage history.

Check electric system popped up. DTC: P1AD300 Critical hybrid/ev battery system fault involving abnormal cell voltage deviation 9,902 miles

SAFETY DEFECT REPORT: 2025 HYUNDAI IONIQ 5 HIGH-VOLTAGE BATTERY FAILURE On Sunday, July 5, 2026, at approximately 24,000 miles, the vehicle suddenly displayed a critical dashboard safety alert notifying me of an electrical propulsion failure and explicitly instructing me not to drive the vehicle. The sudden failure entirely disabled the vehicle's driving power and compromised its operational safety. The vehicle was removed from my possession via a flatbed tow on Wednesday, July 8, 2026, and delivered to Southern States Hyundai. On July 11, 2026, the dealership service technicians diagnosed a total high-voltage traction battery pack failure. The dealer opened Repair Order 9651579, and Hyundai Corporate approved a full warranty replacement of the $28,000 battery system. The vehicle remained out of service due to this safety defect for 21 cumulative days until the component replacement was completed on July 29, 2026.

I need to report a serious vehicle safety concern involving a catastrophic front-right tire failure at highway speed. I am requesting a Hyundai case number and preservation of all physical evidence. Please preserve the failed tire, detached tread assembly, bead remnants, wheel, TPMS components and all service records. These items constitute material evidence necessary to determine whether the initiating cause was underinflation, rapid pressure loss, mounting damage, belt separation, bead failure or a manufacturing defect. The vehicle had been returned after approximately one month at a repair facility. After the incident, the three remaining tires measured 41, 35 and 35 psi, while the vehicle placard specifies 38 psi. The pre-failure pressure of the destroyed tire is unknown.

EV system not working on car with 8k miles on it. Dealer backed up and cannot offer rental car. This is a safety issue for me . This is a KNOWN issue for Hyundai and they are not recalling and their dealers are not equipped to resolve quickly.

Systemic failure of the electrical architecture and Integrated Charging Control Unit (ICCU) resulting in a sudden, catastrophic loss of motive power. Over 14 months of ownership, this vehicle has suffered four distinct, electrical and charging failures. On June 6, 2026, the vehicle experienced a total ICCU failure. All lights in the car went dark and lost all power without warning, creating an immediate and life-threatening hazard to myself . The vehicle had to be towed. Three prior repair attempts for charging and 12V battery failures were made by the dealer/. They replaced the ICCU, the car currently runs.. The replaced ICCU has not been redesigned and as a result the car is unsafe to take out on the highway or on a long drive.

The car entered a failed ICCU state (not confirmed until the car was looked at by Hyundai at the dealership) while I was driving down to Ano Nuevo regional park. Received a warning on the dash that said that electrical system has failed and to pull over. It restricted me from going over 10 mph on Highway 1 and I eventually pulled over the side of the road and got towed to the dealership. The car is home with me now but I do not feel safe driving this vehicle after all of the reports of ICCU failures. I am very concerned this will happen again and in a more dangerous situation. I was also stranded by this car in March 2026 with a dead battery.

I was slowing down, actively pressing the brake pedal to bring the vehicle to a full stop. As the car decelerated to what my senses and perception registered as a full stop, I pressed the “P” (Park) button while keeping my foot on the brake pedal. I felt the physical click of the “P” button under my thumb while still holding the brake, and my mind registered that the vehicle had successfully transitioned into Park. Before turning around, I visually confirmed that the vehicle had come to a complete stop. Believing it was fully secured in Park, I turned my head to check on my child in the back seat and naturally released the brake pedal completely. However, the system had actually rejected my command. I assume that the vehicle likely still had a small amount of speed at the exact millisecond I pressed the button, and the computer automatically blocked the “Park” command and kept the car in gear. Because an electric vehicle operates in almost complete silence, with no engine noise or vibration to indicate that it is still in gear, there was no auditory or physical cue to alert me that the car was moving when I released the brake. While my attention was turned toward the back seat for a few seconds, the car quietly began to creep forward, leading directly to the collision with the car in front of me. Following the accident, I found that the vehicle produces slightly different sounds when Park is rejected and when it is successfully engaged. However, the owner’s manual describes only the dashboard message and does not describe these sounds or explain how to distinguish them, so their meanings may be learned only through the failure. At the time of the incident, I was not familiar with the distinction between these two sounds. Because my brain processed the physical press of the button as a successful action, and I had visually confirmed that we were not moving, my focus immediately shifted to my child. I was entirely misled by the digital interface.

Failure of ICCU and high voltage fuse. Known issue in this vehicle. 2022-24 have been recalled. 2025 needs to be recalled. Warning on dash when it occurred, then 12V battery died. Undrivable. Towed in and repaired under warranty by dealer. But apparently it can happen again because Hyundai doesn’t know how to permanently address the problem.

During a family road trip, my 2025 Hyundai Ioniq 5 (~9,000 miles, less than one year old) suddenly showed red "Check Electric Vehicle System" and 12V battery warning lights and then completely lost power. The 12V system failed entirely - the vehicle could not be driven or shifted, and the doors and the rear hatch could not be locked or unlocked. It had to be flat-bedded to a Hyundai dealer because it was completely inoperable. The dealer diagnosed a failed ICCU (Integrated Charging Control Unit) and a blown ICCU safety fuse (fault code P1A9096) and is replacing both under warranty; the component is available for inspection. The ICCU converts high-voltage battery power to charge the 12V system; when it fails, the vehicle loses all electrical power and drive capability. The warning lamps appeared immediately before total power loss, with no prior symptoms at the last scheduled service. This is a known, safety-critical failure on this platform: a sudden, complete loss of power can strand occupants and, if it occurs while driving, cause loss of motive power - a serious crash risk. My vehicle was stationary when it failed, but the same failure at speed would be extremely dangerous. I have video evidence of the car completely bricked out.

1. Sudden Unintended Acceleration On two (2) separate occasions, after coming to a complete stop at a red light with foot on the brake pedal, the vehicle suddenly lurched forward on its own. 2. Brake Pedal Malfunction On more than ten (10) occasions, when attempting to stop at a light, the brake pedal briefly behaves like the accelerator for approximately 1–2 seconds. Driver has to release the brake and press it again to restore normal braking function. 3. Doors Unlocking/Opening on Their Own On more than one hundred (100) occasions, approximately 10 minutes after parking — with no key fob or phone nearby — a door opens on its own. Confirmed via mobile app notification and visual confirmation from a distance each time. 4. Apple CarPlay Connectivity Issues CarPlay frequently fails to connect. During phone calls specifically, the connection drops in and out intermittently. 5. Sticky Residue on Door Handles A sticky, adhesive-like residue is present on the interior passenger door grab handle and rear door handles. Residue does not clean off and transfers to hands on every use.

1. Sudden Unintended Acceleration On two (2) separate occasions, after coming to a complete stop at a red light with foot on the brake pedal, the vehicle suddenly lurched forward on its own. 2. Brake Pedal Malfunction On more than ten (10) occasions, when attempting to stop at a light, the brake pedal briefly behaves like the accelerator for approximately 1–2 seconds. Driver has to release the brake and press it again to restore normal braking function. 3. Doors Unlocking/Opening on Their Own On more than one hundred (100) occasions, approximately 10 minutes after parking — with no key fob or phone nearby — a door opens on its own. Confirmed via mobile app notification and visual confirmation from a distance each time. 4. Apple CarPlay Connectivity Issues CarPlay frequently fails to connect. During phone calls specifically, the connection drops in and out intermittently. 5. Sticky Residue on Door Handles A sticky, adhesive-like residue is present on the interior passenger door grab handle and rear door handles. Residue does not clean off and transfers to hands on every use.

Description of Safety Defect:The integrated Forward Attention Warning (FAW) driver-monitoring camera located on the steering column continuously fails to track facial structures or pupils during routine daytime driving. This occurs despite maintaining a proper driving posture, adjusting the steering column layout, and removing any facial obstructions.Safety Consequences:When the system falsely registers a "distracted driver" state due to its faulty sensor calibration, it routinely triggers erratic high-pitched chimes and immediately disables active highway driver assistance systems, including Highway Driving Assist (HDA), Lane Keeping Assist (LKA), and Smart Cruise Control. This abrupt loss of active steering guidance and vehicle speed maintenance creates sudden, hazardous driving situations on open highways. Furthermore, to get the faulty alert chimes to clear, the driver is forced to take their eyes off the roadway to stare directly into the steering column sensor camera, actively causing driver distraction.

iccu failure. Car completely disabled.

Car has worn down both rear tires to wires and dealer has said alignment is way out and could be suspension issues. Checked recalls and don’t see any but it’s clear there is a serious issue as these tires should have worn like this

3/31/2025: New Vehicle leased. 11/24/2025: 12V battery failure. Battery replaced by dealership. 4/22/2026: 12v battery failure. Battery replaced by dealership. 6/7/2026: ICCU failure. Car cannot charge 12v battery. Car in “limp” mode - cannot drive faster than 40 mph while on highway. Fortunately was able get car to safe location to be towed. All three instances appear to be due to the same engineering flaw in the vehicle.

The driver attention warning feature is defective and often requires you to take your eyes off the road and stare at the DAW sensor in order to eliminate the car's constant "attention" warnings. Even while looking straight ahead while driving, the DAW is often erroneous and will disengage safety features (e.g., lane keeping assist, adaptive cruise control, etc.) because the DAW erroneously thinks that the driver is not paying attention. As another example, if you are driving uphill/downhill or on a curved road and are looking at the road ahead of you at a slight angle, the DAW will erroneously report that the driver isn't paying attention. The system will then disable the cruise control and lane keeping assist, creating a hazardous situation. Alternatively, the driver can look DOWN (not looking at the road) at the DAW sensor and stare at it until the car reacts. This takes your eyes off of the road and creates hazardous situations. As someone who wears prescription glasses, the problem is even worse. I cannot set a comfortable seat/steering wheel configuration where the DAW can "see" through my prescription glasses. If I want to drive in my normal position, I either need to take my glasses off or turn off the safety features (e.g. lane keeping assist and adaptive cruise control) in order to drive. Hyundai is well aware of this problem and it exists across much of the Hyundai and Kia platforms. Dealerships say that the car is working as intended. In reality, the defective DAW system creates more risk and contributes to a significantly less safe ride (as I'm constantly taking my eyes off the road to stare at the darn sensor).

ICCU failed with a pop sound in the evening. Next morning, on my way to the dealership, car started fine, alerted me about the “check electric vehicle system”, but drove fine for about a mile. Then the car came to a crawl mode, refusing to go over 20mph and stopped completely with out any indication. Luckily, I was in a quiet neighborhood and was able to steer the car to the curb safely.

When I started the car at 10pm , a loud pop was heard and warning lights on the dashboard indicated an electrical problem. I turned off the radio and anything extra that could use up power; during the next 45 minutes I took surface streets instead of the freeway to drive 22 miles back home and speed was limited to 40 mph. The next day the same warning lights were on the dashboard and speed was limited to 20mph; car lost power after 1 block. Car was towed to the dealer, where an ICCU failure and blown fuse in the engine was diagnosed by dealership and replaced.

ICCU failure. Car slowed ona busy street. Inspected by dealership service and confirmed ICCU failure. The pop sound and then check electrical system warnings.

While attempting to operate my 2025 Hyundai Ioniq 5, the vehicle abruptly displayed a 'Check Electric Vehicle System' warning accompanied by a critical red master service light on the dashboard. A diagnostic scan via the factory Bluelink app revealed a hard fault code: DTC P1A9096 (ICCU / DC-DC Converter malfunction). This failure occurred under 7,000 miles, following a previous total 12-volt battery system failure a month prior. Driving the vehicle with this specific code puts the driver at immediate risk of 'Turtle Mode' or a sudden, total loss of motive power while in motion. Living in a mountainous region where the primary thoroughfare (Highway 17) lacks shoulders, an unexpected power failure presents an extreme, unreasonable highway safety risk to myself and surrounding traffic. The vehicle had to be flatbed-towed to a dealership for an entirely new ICCU assembly

Car has only 3307 miles and incurred a DTC P1A9096. This meant the vehicle only had power from the 12 volt battery, not traction battery. Luckily, the event happened 3 miles from home and we were able to just make it. Next day upon calling for flatbed tow service, the car generated an additional DTC P05616. 12 volt battery was exhausted and nothing functioned on the car. Had to then call for a different tow truck with dollies. The failure of the ICCU (Integrated Charging Control Unit) was a cause for recall on earlier year's models. This is a major safety issue as failure of the ICCU leaves you stranded with an inoperable vehicle where you cannot even lock the doors. Currently, the vehicle is at the dealer (Lithia Hyundai of Anchorage) for repair.

While using Highway Driving Assist/Lane Following Assist on Interstate highways, lane markings frequently disappear on overpasses and in construction areas. When this occurs, lane-centering assistance silently disengages. The only indication is a small dashboard icon changing color. There is no audible warning, steering wheel vibration, or other prominent alert. The vehicle may begin drifting before the driver realizes steering assistance has been lost. Observed repeatedly on Massachusetts highways, including I-495 and I-290. This creates an unexpected and serious safety issue, potentially resulting in an accident. I had this happen during a recent trip, and multiple times the car wandered towards an adjacent lane. It caused me to lose confidence in the system, and to maintain constant vigilance, gripping the wheel tightly at all times. Had I not done so, I’m sure I would have had an incident. Who watches the dashboard all the time? The driver's eyes are supposed to be on the road ahead, especially when approaching an overpass. Had they incorporated an audible or tactile alert, this would have greatly increased the driver’s awareness and potentially avoid a crash. Since the system obviously knows when it has disengaged, it would be a simple matter to implement this. My preference would be steering wheel vibration.