2025 Hyundai Santa Fe

The vehicle has two display panels, molded into a single frame. There is an infotainment panel on the right that handles music, maps, and phone interaction. There is an instrument panel on the left. The infotainment panel has not issues. The instrument panel blanks out for 3 - 5 seconds every few minutes, and then reappears. Occasionally the words "No SIgnal" in big red letters will appear. Occasionally the gear selection letter will remain on the otherwise blank screen. The screen also shudders / tears occasionally before blanking. It does this whether the vehicle is moving or parked. I purchased the vehicle used, Jan 2 2026. I noticed the problem a couple of days later. It has continued. It is not getting any worse or any better.

Since I bought the car the forward attention warning goes off constantly. I’ve taken it to the dealership multiple times. They took off my eztag, stated it was blocking my camera. This is not the issue. Now there are 56 cars ahead of mine. This will be the 3rd time for the exact same complaint. It affects everything in the car. My cruise control doesn’t work because of this issue. If you turn the toggle back on it has more warning. Just the beeping constantly is going to cause an accident. I’ve asked Hyundai to buy it back they refuse. This is a known issue.

Vehicle experienced sudden loss of power while driving. Transmission warning and ABS warning lights appeared at the same time. The vehicle would not shift properly and began skipping and dropping gears. Smoke was visibly coming from the center underside of the vehicle near the transmission area. There was a strong burning oil or rubber smell inside and outside the vehicle. This created a serious safety risk due to loss of acceleration and potential fire hazard from smoke and burning odor. The issue has been intermittent since early ownership, including jerky shifting and hard engagement. The dealer documented dual clutch transmission communication faults and ABS faults but returned the vehicle the same day stating it was a loose ground. The problem has continued after repair. Vehicle is available for inspection. The defect involves the powertrain and related electrical systems.

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.

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 had a bruise from my seat belt and came too close to slamming my head on my steering wheel. Thankfully, the car behind wasn't tailgating. About a month ago, I was driving on the parkway going east. I was originally in the right lane. I put on my blinker and when it was clear, I changed lanes to the middle lane. After I was clear and my blinker was off, my car started screaming to tell me that there was a car in my driver's blind spot (this happens EVERY time I switch lanes). I drove for maybe 1.5 - 2 miles and then suddenly, my car slammed on the brakes. Someone must be watching over me because the Escalade behind me (definitely tailgating) was somehow able to swerve into the left lane and then swerve around me to cut me off in revenge. They were screaming and honking at me, while I was screaming and yelling at my car. They could have easily have plowed into me (we were driving at least 60mph) and could have caused a horrible accident that could have killed myself or others around me. I have notified Hyundai of this issue and have read many similar complaints online. Hyundai claims they cannot "replicate the situation" and therefore, Hyundai Corp is unable to fix the problem.