2024 Hyundai Palisade

On 2 separate occasions, under similar circumstances, the collision warning systems, both front and rear, applied the brakes for no reason. When reversing slowly (foot slowly off brake pedal) from a parking space on an almost empty rooftop parking lot; I confirmed there was no foot traffic or moving vehicles before I started to back up. The brakes automatically applied (no screen display); I reapplied the brake and was then able to reverse normally. On a normal service visit to my dealership, I mentioned the incident and it was noted on my invoice. About 3 weeks later, at a full stop at a stop sign, I was about to turn left onto another road. After confirming there was no cross traffic of any kind, and before I had completely released the brake, the collision assist engaged and suddenly applied the brakes (again with no screen display but an audible thump). Again, I was able to reapply the brake and then accelerate to make the turn. Since the same event had happened twice, I went directly to my local Hyundai Service Center and reported it. They kept the vehicle for a week and tested it thoroughly. Nothing showed as being faulty. When I picked up my vehicle on 5/22/26, they informed me that there's a known issue (NHTSA Campaign # 26V316) with other Hyundai models (not the Palisade) and that an update for the forward collision avoidance system in those models will be coming mid-summer. As the Palisade is not included in the Campaign list of makes/models, but has the exact same event/problem, I wanted to report this for inclusion in the safety recall. I was not injured in either event but anyone with this issue could potentially be at risk in the future.

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.

I was going fairly slow, about 25. Approached a stop sign and my vehicle began shaking uncontrollably and I could not stop. Ended up going through the stop sign and it stopped abruptly. This could have been a deadly scenario. This is not the first time it has happened but not to this extend. Also the rear collision warning does not always work! I backed into a dumpster at work and now have thousands of dollars to repair my back hatch. I feel UNSAFE in this vehicle and driving my three year old son around in it!