2024 Hyundai Palisade

While driving the vehicle, the accelerator pedal was pressed but the vehicle failed to respond and did not accelerate, it simply rolled slowly as the engine continued to idle. The driver increased throttle input in an attempt to get the vehicle to accelerate. The vehicle continued to show no response to the additional throttle. After a delay, the vehicle suddenly resumed normal operation while the higher throttle input was still applied. This resulted in an abrupt and undesired surge of power. While this was occurring, another vehicle was rolling forward in preparation for a left turn. The other driver appeared confused by the Palisade’s lack of acceleration (apparently believing it was yielding) and had not yet turned into the path of the Palisade. The sudden surge of power created a near-miss situation. This incident involved a delayed response to throttle input followed by a sudden surge of power under increased throttle when the vehicle resumed normal operation. The behavior created a safety risk by causing another driver to misjudge the vehicle’s intentions and by producing unexpected lack of acceleration followed by acceleration at a critical moment. This is consistent with ongoing intermittent throttle and power-response issues that have previously been reported to the selling dealer on multiple occasions.

After the "9C9" emissions recall update the vehicle randomly fails to respond to appropriately throttle input when attempting to accelerate into traffic. The issue is very intermittent - it may occur twice in 10 minutes or drive fine for hours. It has demonstrated both a "bucking" / stuttering / misfire feeling as well as a complete lack of any throttle response. After a few seconds of bucking, the vehicle returns to normal and accelerates smoothly with no change in throttle input. If the throttle failed to respond, pumping the pedal a few times has resumed normal operation. Situation has occurred multiple times since the update and has allowed the vehicle to roll into traffic without the ability to promptly accelerate to speed creating a safety hazard. There are no warning lights, and the dealership is unable to reproduce the issue.

ALTERNATOR FAILURE: My family and I were moving to [XXX] from [XXX]. A few hours into the drive, the vehicle battery light came on. It was intermittent though. It would be on for a little while 10-15 mins and then shut off and then repeat this process. I stopped at an Autozone and they tested the battery and it was showing a charge of 7%. I could not afford to get stranded somewhere so I went ahead and had the battery replaced, even though I suspected the alternator was going bad. We continued on the trip, but the battery light continued to turn on and off. The vehicle ultimately began losing power about 2 hours after replacing the battery, causing all the warning lights on the dash to turn on, the main center console display lost power and then I lost power steering. All of this happened while I was on the interstate, putting myself and my family in serious danger. I was able to pull the car off an off ramp and park it safely. I called a tow service to take it to the nearest Hyundai. The dealership verified the alternator was bad, but later found that the tensioner assembly had also failed and would have caused serious damage if they had not caught it. The vehicle has since been repaired under warranty, but I researched and found this is a common failed item. The vehicle only has 33,253 miles on it, and is barely 2 years old. Alternators should not fail like that. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am filing a vehicle safety complaint regarding a 2024 Hyundai Palisade Calligraphy due to repeated safety-related mechanical failures and ongoing defects that create dangerous and unpredictable driving conditions. Since purchase in August 2024, the vehicle has experienced multiple serious issues, including steering rack problems causing sticking, resistance, abnormal noises, and inconsistent steering response while driving. The vehicle has also experienced rear automatic braking/sensor malfunctions causing sudden stopping and grinding during operation, creating unsafe driving conditions and concerns about unintended braking behavior. Additional issues include transmission and gear engagement concerns, engine replacement under recall, infotainment system replacement, ongoing recall-related concerns, and excessive tire wear requiring replacement of all four tires at approximately 29,000 miles. The premature tire wear raises concerns regarding possible steering, suspension, alignment, or drivetrain defects. There are also concerns involving unusually fragile windshield and window glass, which appears to be a commonly reported issue among Hyundai Palisade owners. Despite repeated dealership visits, diagnostic evaluations, repairs, and major component replacements, the problems continue. The vehicle has spent an estimated total of approximately five months in repair facilities or undergoing service evaluations since purchase. The steering issues and rear automatic braking/sensor malfunctions are the most serious concerns because they directly impact the safe operation of the vehicle. The vehicle has demonstrated unpredictable behavior, including grinding, sticking steering response, and sudden stopping. These ongoing defects have caused significant safety concerns and loss of confidence in the reliability and safe operation of the vehicle. I believe these issues warrant further investigation due to the potential risk to drivers, passengers, and others on the road

While driving on a high-speed interstate with two children in the vehicle, and without any prior warning signs or issues, the dashboard began displaying sequential warnings from multiple Advanced Driver Assistance Systems (ADAS) sensors. As the vehicle continued cycling through numerous dashboard warnings, the power steering failed, making the vehicle difficult to control. Additional electronic systems also began malfunctioning, including the display screen, cameras, and safety sensors, while the driver attempted to safely maneuver the vehicle to the shoulder of the road. After reaching the shoulder, the driver powered the vehicle off in an attempt to reset the electrical systems. However, once powered down, the engine would no longer start. When the tow truck arrived, the technician was required to jump-start the battery in order to shift the vehicle into neutral for towing. The technician also showed the driver a low-voltage reading on the jump-start device, indicating a possible alternator or charging-system failure. Hyundai dealership representatives later stated that diagnostic testing of the alternator and electrical system showed no faults and informed the customers that the battery was simply dead. After the dealership replaced the battery, the customers drove the vehicle approximately 15 miles to their residence. During that drive, the vehicle again began displaying the same sequence of sensor and system failures. The power steering failed a second time, and the same electrical malfunctions experienced during the initial incident were repeated.

When picking up my children from daycare, my 2024 Palisade (37K miles) would not shift into park. It was stuck in the reverse position. It would not shift to any drive, park, or neutral. Even in the reverse position, the car would not move. I applied the emergency brake and had to turn the car off without placing it in park. When I restarted the car, and place it in reverse, the engine made clunking noise. The dash said "Shifting Malfunction. Service Immediately".

1. The exact component that failed is unknown at this time. The fire appeared to originate in the driver-side front area of the engine compartment near the headlight. Prior to the fire the vehicle experienced engine shaking and a check engine light. The vehicle has been towed to a Hyundai dealership and is available for inspection by insurance investigators, the manufacturer, or safety investigators upon request. 2. The vehicle caught fire while it was being operated on a public roadway shortly after leaving our residence. Flames were visible from the engine compartment within minutes of driving. This created an immediate safety risk to the occupants of the vehicle and to other motorists because the fire occurred suddenly while the vehicle was in motion. 3. The problem has not been reproduced. The vehicle was towed to a Hyundai dealership following the fire incident and is awaiting inspection. The vehicle is a total loss. 4. The vehicle has been inspected by a tow operator and insurance representatives after the fire incident. The vehicle is currently located at a Hyundai dealership and may be inspected by the manufacturer or investigators if requested. 5. Yes. Prior to the fire the check engine warning light illuminated and the engine began shaking while the vehicle was being driven. Within moments of these symptoms a loud popping sound was heard from the front driver-side engine compartment area, followed by visible flames.

On January 12, 2026, the vehicle shut off twice during the same trip while driving in traffic. All dashboard warning lights illuminated, the tachometer spiked, RPM readings did not correspond, the gear selector became unresponsive, and the vehicle lost propulsion while in motion. On February 15, 2026, the vehicle shut off again while driving under similar conditions. The vehicle was taken to a Hyundai dealership for diagnosis. The battery failed a load test and was replaced. According to the repair order narrative, after the battery replacement, the stall condition recurred during dealership testing. Multiple extended road tests and datalogging were later performed. The dealership has stated they are unable to re-replicate the condition and that no active diagnostic codes are present. The vehicle has experienced multiple loss-of-power events while in motion. An intermittent stall while driving presents a significant safety hazard, particularly in traffic conditions. The root cause has not been definitively identified.

Component/System: Engine — specifically the engine valve springs and related components. Description of what happened: While driving, the vehicle began to shake violently, and the check engine light came on. At times, the vehicle loses power and shuts off completely, then restarts and drives normally for a short period before the issue returns. It feels and sounds like the engine is about to fall out. These symptoms match the description in Hyundai Safety Recall 255 for the 2024 Palisade (fractured engine valve springs that can cause engine failure, loss of power, and fire risk). Safety risk: The sudden loss of power and engine shaking put my safety and the safety of others at risk, especially while driving in traffic or at higher speeds. The problem could lead to a crash or engine fire if the valve springs fracture or the engine block is damaged. Inspection/confirmation: The problem has not yet been officially confirmed by a dealer, but Hyundai stated that my VIN is not included in the recall, even though my vehicle shows the same symptoms and falls within the recall’s production timeframe. Prior warnings or messages: The check engine light comes on when the vehicle starts shaking, then goes off after the vehicle stops or restarts. The issue has occurred multiple times, most recently in early October 2025. Additional notes: The vehicle is a 2024 Hyundai Palisade, and the issue began about 5 days ago. The symptoms are consistent with fractured valve springs as described in the recall. I am requesting investigation and inclusion of my VIN in this recall.

1. What component or system failed or malfunctioned, and is it available for inspection upon request? Multiple safety-critical systems have failed repeatedly, including: •Engine (multiple shutdowns while vehicle was in motion) •Automated Emergency Braking (AEB) (activating without cause while reversing) •Brake Pedal (intermittently unresponsive with audible rattling) •HVAC (leaking fluid into the passenger-side floorboard) Yes, the vehicle is currently with the dealership (Stamford Hyundai, CT) and is available for inspection. 2. How was your safety or the safety of others put at risk? • The engine has shut off without warning while the vehicle was in motion, including in traffic, creating the potential for rear-end collisions. • The emergency brake has slammed on while reversing, without any obstacles present, risking whiplash and collisions with pedestrians or nearby objects. • The brake pedal becomes unresponsive, with a loose/rattling sensation, making it difficult to slow or stop the vehicle safely. • The HVAC leak creates slippery floor conditions, posing a secondary risk for occupants during ingress/egress. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? The dealership (Stamford Hyundai) acknowledged some issues but stated they were unable to replicate all of them. However, the brake pedal defect is consistently reproducible and occurs daily. Multiple videos and logs have been submitted to Hyundai’s consumer affairs team. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle is currently under inspection by Stamford Hyundai. Hyundai Consumer Affairs (case managers Noorpreet and Taruni) have been involved and have reviewed videos and documentation. No inspections by police or insurance. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No.