2025 HYUNDAI SANTA FE Electrical System Problems

I tried to drive my 2025 Hyundai Santa Fe Hybrid; the vehicle displayed a gear selection error message stating something like "gear already selected". The vehicle would not shift properly and would not power off or restart. I attempted multiple shutdown and restart attempts using the Start/Stop button with no success. The vehicle remained in this condition for about 30 minutes and would not allow normal operation or shutdown. Due to safety concerns, Hyundai roadside assistance was contacted and a tow truck was dispatched. Before the tow arrived, the vehicle spontaneously allowed shutdown without any intervention. This was a safety related failure involving the shift-by-wire system and vehicle power-down logic. The issue occurred without warning and left the vehicle inoperable. The vehicle had app 7150 miles at the time of the incident.

My 2025 Hyundai Santa Fe Hybrid has recurring powertrain communication failures starting at only 67 miles and continuing at 5,300 and 6,200 miles. Diagnostic trouble codes include U010100 (lost communication with engine control module) and multiple U100xxx codes related to transmission and CAN bus communication failures. These indicate loss of communication between critical control modules. The issue has happened multiple times and remains unresolved. I am concerned this could cause drivability problems, warning lights, or sudden loss of power. This appears to be a system-level defect in the vehicle’s communication network.

My car was locked and battery had died. I was able to get in car with key from fob. I had to put car charger on battery in order to start car. This car is a year old with 18,531 miles

I am submitting this complaint to formally report ongoing and unresolved vehicle safety defects involving a leased 2025 Hyundai Santa Fe. These defects include persistent toxic or chemical odors inside the passenger cabin, electrical and body control system malfunctions, and unintended vehicle operations that present serious risks to occupant health, vehicle security, and public safety. Despite multiple service visits and repeated requests, Hyundai dealerships have refused or failed to conduct comprehensive diagnostic testing, leaving the vehicle in an unsafe and unreliable condition.

There have been several times that I have been driving and either turning onto a 4-lane road (2 lanes going each way) or driving on the parkway, where my car has slammed on the brakes by itself. Not only was I not prepared for this to happen, but neither were the cars behind me. I tend to drive with at least 1.5 car-length space between myself and the car in front of me. Last week, I was making a right hand turn (going north) into the right lane from a residential street. The only other car near me was the one driving in the left lane (also going north). My car drove about 100 ft and maybe realized that there was a car next to me and just slammed on the brakes. I was suddenly thrown forward. My seat belt locked and I was thrown back into my seat. I...

On more than 10 occasions the SUV gets stuck in neutral upon starting the car. You can only switch between Park and neutral and are unable to drive the car. It will not go into drive or reverse. Sometimes this problem lasts for 10 minutes. The car will not shut off during that time even when you press the stop button the screen just resets. The only solution is to wait or to press the hard reset button on the computer screen. It is a dangerous situation because if you need to go somewhere, you physically cannot drive the car. I took it to the car dealership when the car was almost brand new and they had it for eight days and they did a software update but I don’t think they found the problem. this problem is now having more and more frequently.

My 2025 Hyundai Santa Fe Hybrid with 1724 miles was unresponsive in the garage. Not able to get in the car because the 12v battery was completely drained. Hyundai dispatched a tow truck to take it to the local Hyundai dealership. A service provider did call me to let me know the car was there. He also told me that apparently this problem I had was a known issue with the 2025 Santa Fe Hybrids. I had no advance warning of any imminent problems with the battery.

Battery/Electrical: 3 separate occasions the battery drained completely overnight, requiring mechanical key to open and jumpstart services from AAA (covered under Hyundai services). Risk of leaving me stranded on isolated areas. Problem confirmed via 3 requests for AAA to jumpstart my vehicle. Hyundai service dept inspected vehicle, confirmed low battery levels, unable to reproduce issues overnight, reported no electrical or mechanical issues that would cause battery drain. No warning messages, lamps, or symptoms prior to each failure. Steering wheel column has friction squeak when using driver assist and adjusting direction. No issues at this time.

I’ve had several instances where putting the vehicle into park the system doesn’t register the shifter button being pressed and continues to be in the current gear. IThis seems to be a safety issue since it has happened multiple times ever since I bought the vehicle. I made sure to fully press the Park button but it continues to stay in the drive or reverse gear The first time it happened I did not notice the vehicle did not register the gear change and the car started to roll forward towards a building.

I am reporting a critical safety defect involving my brand-new 2025 Hyundai Santa Fe. While driving on the freeway, the vehicle experienced a complete brake system failure, nearly causing a serious accident. My boyfriend was driving at the time, and when he tried to brake, the vehicle did not stop. He had to take immediate evasive action to avoid crashing, which put both of us — and nearby drivers — in immediate danger. The vehicle was purchased about a month ago and had never been serviced or modified. After the failure, it was towed to Hanlees Auto Mall Hyundai in Richmond, California, where the service department inspected it and confirmed the problem was caused by a missing clamp, which is a critical component of the braking system. This appears to be a manufacturing or dealership oversight. They took photos, documented the issue, and made the repair — but they also...

Vehicle fails to appropriately recognize when it is put in Park. The dash shows a "P" indicating the vehicle is in park, but emits a continuous beeping sound with a message on the dash that reads, "Auto Stop is Off. Shift to P or N and start engine manually." However, when pressing "P" as it states I must do, it then reads, "Gear already selected," before returning to the previous message. This is all while a "P" is illuminated and beeping is continuous. Throughout this time, if the brake is released, the car begins driving forward as though it is in Drive, not Park. I have 3 separate videos of this happening.To answer the above questions: The vehicle has repeatedly been inspected by a Hyundai dealership and each time I am told the issue cannot be replicated. I am happy to have it inspected again. It most certainly puts my...