ON 3 separate occasions the vehicle has suddenly quit going.twice going through an intersection after taking off. the third time going up hill near my house. the car would only go 10 mph. A message would come up on the dash that reads " transmission system error, Check transmission oil immediately. That was not the problem. The Hyundai dealership performed a recall update on the computer the first time.but that didn't solve the problem as a week later the same thing happened .Again the car was towed to the dealership. this time another transmission service was performed according to a tech line information. after retrieving my car from the dealership I drove it for less than a week and the same thing happened. The car was towed back to the dealership again.Now the dealership says they can't do any repairs as the computer will not store any malfunction codes so they will know what to repair. I have been in contact with Hyundai Motor America and a case file has been established. " 43176412 ". Hyundai will not accept any responsibility for placing a computer in a car that will not retain a MIL code. Hyundai now tells me they have done all they can and for me to get my car from the dealership and drive it. That is ridiculous. Hyundai wants me to put myself in danger of having a wreck because the car loses power in front of traffic behind me. People start slamming on brakes to keep from hitting me and blowing their horns.I'm also afraid of some loose cannon out there having road rage at me because I can't get out of the way. As for the car and Hyundai , no mention of the shortcomings of the computer was mentioned until the 3rd time the car was towed back to the dealership. Also, there is some type of serious problem with the transmission which Hyundai is failing to be concerned with . This is a dangerous situation. do I need to be seriously injured or worse before Hyundai addresses this issue ?

Source: NHTSA complaint ODI #11764017 · view all complaints for this vehicle at nhtsa.gov

Hyundai Sante Fe Hybrid 2025 has a bad factory seal on the high voltage harness - hybrid battery connector that causes water to intrude the connector under normal conditions which can short the battery and pose a major safety issue. Hyundai is refusing warranty coverage of my shorted hybrid battery on my brand new 2025 Hyundai Sante Fe Hybrid stating “Flood” with no evidence of flood damage. My car experienced multiple P engine hybrid system faults on XXX and would not drive. I had it towed the Van Hyundai Carrollton on that date. They did not look at the car for over a week and it sat on their lot the entire time. On XXX they finally inspected it and claimed the car had been “flooded” and shorted the hybrid battery. The only evidence they provided was moisture in the high voltage harness. There were no water/silt lines, any other damage to any other components, and no evidence of any water anywhere else on the vehicle. The video they showed of the undercarriage only showed normal splash marks from driving. The car was never flooded/submerged. Any water/moisture found in the harness would have been due to a faulty/defective factory seal that should be impervious to water under normal operating conditions. No water/flooding/submersion damage would have been obvious of this. The dealership refused to provide any evidence and had no follow-up. One key aspect they refused to acknowledge was there was a massive rainstorm in [XXX] onXXX which was also the only rainstorm in the area in the previous 1-2 months. This happened while the car was on the dealer’s lot. The car had no issues with any water prior to being at Van Hyundai. A case was opened with Hyundai Corporate and the Dealship also lied stating the car wasn’t in their system until XXX, which is false as I have phone records, tow records, and appointments showing the 7/10 date, so corporate overlooked that. I disagreed with the dealerships diagnosis as it was a scapegoat finding putting all blame o INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Source: NHTSA complaint ODI #11755330 · view all complaints for this vehicle at nhtsa.gov

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.

Source: NHTSA complaint ODI #11705955 · view all complaints for this vehicle at nhtsa.gov

Pirelli Scorpion 255/45 R20 I am filing this complaint regarding a serious and unacceptable defect with my Pirelli tires. To date, two of the four tires have proven to be defective. In both instances, the defect was not readily apparent while the tires were mounted on the vehicle. The problem was discovered only when a qualified tire technician attempted to remove the tires from their rims. In both cases, the tire structure collapsed during removal. This is extremely concerning. A tire should not collapse or fail structurally simply because a trained tire technician is removing it from the wheel. The fact that this has now occurred with two out of four tires strongly suggests that this is not an isolated incident. I have also researched complaints filed with the National Highway Traffic Safety Administration (NHTSA) and have found numerous complaints involving Pirelli tires and sidewall failures, including sidewall bulges, blowouts, tread separation, and other structural failures. My research indicates that there are at least 15 complaints specifically involving the sidewall giving way. NHTSA states that consumer complaints are used to identify potential safety-defect trends. There are also recent NHTSA complaints involving Pirelli tires reporting sidewall bulges and failures, including complaints involving relatively new tires. Given that 50% of my four tires have now exhibited a serious structural failure, I am extremely concerned about the safety and reliability of the remaining two tires. I do not believe I should be expected to continue using tires that may contain the same defect. I am requesting that Pirelli: Immediately investigate all four tires, including the two that have already failed. Provide a written explanation as to why these tires collapsed during professional removal from the rims. Determine whether this represents a manufacturing or structural defect. Replace all four tires at no cost to me, rather than requiring me to wait for additional

Source: NHTSA complaint ODI #11764176 · view all complaints for this vehicle at nhtsa.gov

While driving, the chest clip fell apart into multiple little pieces. I was not aware until we were parked at our destination and I went to remove my child from the seat. I am unaware how long he did not have a chest clip for during the duration of the ride. It also broke apart into pieces small enough for my child to choke on. I have reached out to the company.

Source: NHTSA complaint ODI #11762722 · view all complaints for this vehicle at nhtsa.gov

I am reporting a potential safety defect involving repeated windshield chipping and cracking on my 2025 Hyundai Santa Fe. The vehicle was purchased new. The first incident occurred on April 15, 2025, approximately three months after I purchased the vehicle. While driving approximately 60 mph on a highway in clear, dry conditions with no gravel or unusual road conditions, a small rock struck the upper-right portion of the windshield. The windshield cracked from the impact. The windshield was subsequently replaced on June 6, 2025. In June 2026, while again driving approximately 60 mph on a highway under clear and dry conditions, a small rock struck the center of the windshield and caused a chip. In July 2026, approximately one month later, another small pebble struck the upper-middle portion of the windshield and caused another chip. There were no crashes, sudden braking, turning maneuvers, or unusual driving conditions involved in these incidents. I am concerned because the windshield has repeatedly chipped or cracked from relatively small rocks or pebbles. I have owned and driven other vehicles for many years and have never experienced this level of repeated windshield damage from minor road debris. The windshield was supplied by Hyundai. I believe the repeated failures warrant investigation into the quality, durability, material, manufacturing, or specifications of the windshield glass used in this vehicle. The windshield is an important safety component, and a chip can potentially develop into a larger crack and impair the windshield's integrity while the vehicle is being driven. I have photographs of the most recent chip and an invoice documenting the windshield replacement performed on June 6, 2025. I am requesting that NHTSA review this complaint and determine whether similar complaints exist and whether a safety-related defect or trend may be present in the 2025 Hyundai Santa Fe.

Source: NHTSA complaint ODI #11761426 · view all complaints for this vehicle at nhtsa.gov

I am submitting a second and more urgent safety complaint regarding the Driver Monitoring and Driver Assistance systems in my vehicle. I previously reported this same core defect: the system falsely fails to recognize my face, sounds repeated warnings, and disables driving assistance while the vehicle is moving. Despite that prior complaint, the defect remains, and the seriousness of the danger has clearly not been recognized or addressed. This defect has now placed my life in immediate danger. While I was driving, the system falsely determined that it could not properly see my face. It sounded repeated warnings and then abruptly disabled driving assistance. That sudden withdrawal of assistance created a near-crash situation. I was attentive and was not experiencing a medical emergency. The danger was created by the system’s false detection and defective response. A safety system should reduce danger. This system detected a supposed problem and made the situation more dangerous by removing the assistance that was helping keep the vehicle under control. Had this occurred beside a concrete barrier, near stopped traffic, in a construction zone, on a curve, or next to a large truck, the result could have been a fatal collision. I could have been killed because of this system defect. When a driver cannot be verified, the vehicle should maintain lane control, reduce speed, activate hazard warnings, and perform a controlled safe stop. It should never abruptly withdraw assistance and create a more dangerous condition. I request that NHTSA investigate why a previously reported life-threatening defect remains unresolved and require Hyundai to correct this system logic before someone is seriously injured or killed.

Source: NHTSA complaint ODI #11751090 · view all complaints for this vehicle at nhtsa.gov