2025 Hyundai Santa Fe Hybrid

The vehicle has gone into a limp mode unexpectedly while driving on the highway at 60+ mph. The car immediately stopped driving and went into limp mode and cannot go over 30 mph. It was taken to a service dealer. They could not replicate the problem, therefore the vehicle was given back as undiagnosed. This next incident occurred and almost caused an accident, and that was on, again driving on the beltway around Columbus, OH. The car went from 70 mph to 30 mph. The vehicle stayed at 25 to 30 mph the entire time. Could not get it to do anything else. Drove cautiously on the side of the road and got to the dealership after driving 30 minutes at 25 mph. Dealership ended up saying the transmission needed replaced. It has been at the dealer for 3 weeks waiting on a transmission

WHAT FAILED: A panoramic moonroof shattered before delivery and was replaced by the dealer before sale. Despite the replacement, loose tempered-glass fragments remained inside the occupant cabin, including the front passenger compartment and the second-row floor where my two minor children ride. One glass fragment also tore the passenger-seat leather. SAFETY RISK: Loose tempered-glass fragments left in occupant areas create a foreseeable laceration hazard during normal vehicle use, particularly for small children riding in the second row. The presence of enough glass to tear the passenger-seat leather demonstrates that hazardous fragments remained in the vehicle after the moonroof replacement. CONFIRMED BY SERVICE CENTER: Yes. The selling dealer Hyundai of Kirkland was aware that the moonroof had shattered and was being replaced before delivery. The salesperson disclosed the moonroof damage and showed us the vehicle in the service area while repairs were being performed before sale. INSPECTED / REPAIRS: Loose glass fragments were discovered the day after delivery, prompting an immediate call to the dealer and a return visit for cleaning and inspection. Glass fragments continued to be found afterward, requiring additional follow-up visits, including a second unsuccessful repair request approximately one month later. The dealership was aware that loose glass had damaged the seat; on 09/08/2025, the salesperson directed me to repair the tear myself with clear nail polish rather than initiating a warranty repair. See file attached with evidence. No repair orders or service documentation were provided for these interior repairs. The dealer ultimately performed cleaning, third-party leather restoration, and replacement of the passenger-seat cover on 11/04/2025. Because loose glass continued to be discovered after the second repair attempt, I purchased a Prosidium protection plan for future glass-related damage. WARNING SYMPTOMS: None. This was a pre-delivery issue.

WHAT FAILED: The 12-volt battery / no-start system. Beginning XXX, my 2025 Santa Fe Hybrid (bought new XXX suffered seven (7) sudden 12V battery failures causing a complete no-start. Each time the vehicle became inoperable with no warning, stranding my family - including two minor children (ages [XXX] and [XXX]) - and requiring roadside assistance and towing. Events: XXX (tow), 1XXX; the vehicle has sat immobilized at the dealer since XXX (~113 days). 5 dealer repair orders are attached to this complaint. SAFETY RISK: A repeated no-start can strand occupants in unsafe locations and prevent the vehicle from starting in an emergency. Once it had to be extracted from inside our garage by AAA after a 3+ hour wait; on XXX the battery died ~2 minutes after a jump-start, before I drove away. CONFIRMED BY SERVICE CENTER: Yes. AAA certified 0% state of charge at each failure; an independent OBD scan showed 4% ('Not Getting Full Done'). Hyundai issued TSBs 26-01-016H (XXX) and 26-01-016H-1 (XXX) identifying the root cause as the Fingerprint Module (FPM) failing to enter SLEEP mode when the ignition is off, draining the 12V battery - the exact defect my vehicle showed, and it applies to my vehicle. An OTA remedy released the week of XXX was never applied. INSPECTED BY MANUFACTURER: Yes - the dealer and a Hyundai field engineer inspected it. The dealer repeatedly blamed my behavior (windows down, unlocked doors, short commutes ~20 mi/day); its own draw test showed no draw, yet the diagnosis was never corrected. A Final Repair Opportunity in Jan 2026 did not fix it; failures recurred XXX and XXX As of this writing (XXX) the vehicle remains at the dealership since XXX without any status on repairs done or pending. WARNING SYMPTOMS: Sudden no-start / no-crank with no prior warning lamp, beginning XXX and recurring repeatedly. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2025 Hyundai Santa Fe. The contact stated that while driving approximately 70 MPH, the Apple CarPlay system unexpectedly interrupted the operation of the vehicle and initiated a live software update. The navigation system, infotainment system, and other vehicle functions became inoperable. The contact stated that several unknown warning lights were illuminated and continuously cycled on the instrument panel. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted but provided no assistance. The approximate failure mileage was 2,774.

The vehicle has gone into a limp mode unexpectedly while driving on the highway at 60+ mph. The first issue was on May 13, 2026. The car immediately stopped driving and went into limp mode and cannot go over 30 mph. It was taken to a service dealer. They could not replicate the problem, therefore the vehicle was given back as undiagnosed. This next incident occurred and almost caused an accident, and that was on June 3, 2026, again driving on the beltway around Maryland. The car went from 70 mph to 30 mph. The vehicle stayed at 25 to 30 mph the entire time. Could not get it to do anything else. Drove cautiously on the side of the road and got to the dealership after driving 30 minutes at 25 mph.

Sudden loss of power while driving on the interstate (65 MPH) , car would no longer accelerate and slowed down to ~10 MPH. Had to merge onto emergency lane, car struggled to power over 30 MPH. Warning light came up to "Park with engine On to charge battery". Parked car and restarted car and still did not resolve issue. Had to switch the car into "Sport" mode to drive home.

While driving on the freeway at approx 65mph, the car suddenly starting de-celerating and forced me to pull over to emergency shoulder/lane and try to determine the cause. The car is a "Hybrid" and the dashboard stated to put car in Park and Idle the Engine over 2000rpm to charge up the Battery. ( i still don't know which Battery they were speaking of...Engine Battery or Hybrid Battery) I sat there Idling the Engine for 15 minutes and slowly proceeded to get off the freeway and limped the car back to my home. I then called my selling Hyundai Dealer, as the car was still in warranty, and told them of my sudden problem and asking them what could it be??? They said they did not know until they saw the car and tested it with their computer equipment...please have it towed into their shop. So i did and 2 days later they called to say..NO Computer Codes showed any problem. They could not duplicate problem. I said ..."look on the internet...many people have reported sudden lack of power and limp mode activation....all pointing to the High Pressure GDI Fuel Pump Assy failure". Dealer said ..Oh..thanks we will look into that. 5 hours later Dealer called and said I was right, we replaced the Fuel Pump and come pick up the car. 4 months later and 6,000 miles later car is performing normally. I felt compelled to come forward to discuss this part failure as this incident on the freeway could have turned into a tragedy. Thank you