2025 Hyundai Santa Fe Hybrid transmission problems

Filed Oct 31, 2026 · Electrical, Transmission · NV

I am filing a safety complaint regarding my 2025 Hyundai Santa Fe Hybrid, which I purchased as a Certified Pre-Owned vehicle in April 2026 with approximately 15,000 miles. The vehicle currently has approximately 27,000 miles. While driving on the [XXX], my vehicle suddenly and unexpectedly lost propulsion. The vehicle’s electrical systems remained on, but it would no longer accelerate normally. There were no warning lights, messages, or alerts before the loss of power. I was in active freeway traffic with numerous vehicles behind me. Because my vehicle could no longer maintain speed or accelerate, I was placed in an extremely dangerous situation. I feared being struck from behind by another vehicle. It was a terrifying experience. I was eventually able to pull over to the side of the freeway. I turned the vehicle off and waited briefly before restarting it. I was then able to get off the freeway and reach a gas station. Once at the gas station, multiple warning lights illuminated on the dashboard, and I observed that the hybrid battery was not charging. The vehicle ultimately became undrivable. The vehicle was towed to Centennial Hyundai in [XXX] for diagnosis. The dealership advised that diagnosis could take approximately two to three days. This is the first time the vehicle has experienced this failure. However, the sudden loss of propulsion without any prior warning created a serious risk of a rear-end collision. I am concerned that this failure could happen to other Hyundai Santa Fe Hybrid owners while driving at freeway speeds. I am requesting that the federal safety agency review this incident as a potential vehicle safety defect, including the sudden loss of propulsion, lack of advance warning, and apparent hybrid charging-system malfunction. At the time of this complaint, the cause of the failure has not yet been confirmed by the dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 30, 2026 · Brakes, Electrical · CA

My 2025 Hyundai Santa Fe Hybrid has multiple ongoing problems. Several are intermittent. BRAKES: The brake pedal intermittently sticks when I first start the car. STARTING/ELECTRICAL: On two occasions the vehicle would not start and roadside assistance had to come to start it. It is also sometimes hard to start. The Digital Key on my phone intermittently fails to unlock the doors or start the car. On occasion, all audio is lost at startup, including the radio, speakers, and turn signal sound. The front left speaker intermittently cuts out or sounds distorted. The passenger front door exterior handle/unlock intermittently fails. The driver side temperature knob is stuck at 77 degrees F. POWER TRAIN: The vehicle hesitates/stutters during the first half mile of driving after starting. SEATS: The driver seat memory intermittently fails to move to the saved position when the car starts. SUSPENSION: A creaking, spring-like noise occurs when the car rocks during initial acceleration and braking, possibly from the driver side front. I have reported this to the dealer twice before. Inspection: I have reported these problems to Westlake Hyundai in Thousand Oaks, CA, on previous visits and have another service appointment scheduled. The vehicle has not been inspected by the manufacturer, police, or insurance. I am concerned about the brake pedal and no-start problems as safety issues.

Filed Oct 22, 2026 · Fuel system, Transmission · IL

Beginning in early October 2026, my 2025 Hyundai Santa Fe Hybrid Calligraphy has repeatedly experienced a sudden and complete loss of propulsion while driving. During these incidents, dashboard warnings appear stating "Check Driver Assistance System" and "Check Hybrid System. Stop Safely." The vehicle indicates EV mode and completely loses the ability to accelerate or maintain speed. This is not reduced performance or hesitation. The vehicle loses all usable propulsion. The vehicle continues moving briefly while slowing, providing only a short window to reach the roadside. In moving traffic, this creates an extremely dangerous situation because there may be insufficient time or space to safely change lanes before the vehicle slows substantially. The failure occurs without advance warning. Shutting the vehicle off and restarting it temporarily restores normal operation, but the malfunction continues to recur unpredictably. On October 21, 2026, I brought the vehicle to an authorized Hyundai dealership specifically for this problem. The service department reported finding no diagnostic trouble codes and no applicable software updates. No cause was identified, and no repair was performed. The identical failure occurred again the following morning, October 22, 2026, less than 24 hours after the dealership inspection. The underlying cause remains unidentified. The dealership has not reproduced the malfunction, and the vehicle remains available for further inspection. This recurring complete loss of propulsion presents a serious collision risk to occupants and surrounding motorists, particularly in heavy traffic or at highway speeds.

Filed Oct 14, 2026 · Transmission · OK

On 2 seperate instances while driving down the highway the car suddenly loses power and goes into limp mode. The battery and the engine are not communicating to power the vehicle. It will no go over 30 MPH and then says to pull over and charge the battery.

Filed Oct 14, 2026 · Electrical, Transmission · KY

Vehicle went into “ limp mode” It is a hybrid and the electric motor was in operative and top speed is around 35 MPH Unsafe to drive

Filed Oct 12, 2026 · Electrical, Fuel system · FL

The vehicle has a recurring intermittent failure that can leave it completely undriveable. When starting the vehicle, the instrument cluster displays “Check Hybrid System,” “Check Emergency Stopping function,” the check-engine light, and multiple warning indicators. The vehicle remains in Park and will not shift into Drive. This has happened multiple times. Disconnecting and reconnecting the 12-volt battery temporarily restores operation, but the problem later returns. After a reset, the check-engine light may remain illuminated for approximately one day before disappearing. During the most recent occurrence, the vehicle became disabled at approximately 8:00 PM in a retail parking lot while my family, including two young children, was with me. The vehicle would not move. We had to leave the vehicle and walk in the rain to obtain tools so the 12-volt battery could be disconnected and reconnected in order to get the vehicle operating again. The problem was reported in writing to a Hyundai dealership before an August 10, 2026 service appointment, including a request to retrieve and document stored and history diagnostic trouble codes. The condition remains unresolved and continues to recur. The vehicle is available for inspection upon request. Separately, this vehicle also has an unrepaired Safety Recall 288 involving the rearview camera. The vehicle has been taken to the dealer for recall service, but the recall remains incomplete because the dealer stated the required part was unavailable.

Filed Oct 12, 2026 · Transmission · TX · crash · 1 injury

Vehicle was turned on and in park. I placed my child in the back seat, opened the driver door and was able to enter the vehicle. The car began to roll down the driveway, while in park, and ran me over. It continued to roll backwards into a tree and was stopped by rolling into my neighbors home.

Filed Oct 10, 2026 · Engine, Fuel system · KS

Vehicle intermittently fails to accelerate, usually happens after vehicle has been sitting 10 hours or longer. Had back to dealership 4 times, 3 times dealer was unable to reproduce concern. 4th visit dealer installed injectors, concern seemed to be gone for about 2 months but is back again.

Filed Sep 28, 2026 · Fuel system, Transmission · SC

I purchased my 2025 Hyundai Santa Fe Calligraphy Hybrid September 1, 2025. On June 24, 2026, I was driving on the interstate to work when my acceleration quickly dropped out and I wasn't able to go more than 30 MPH. This was terrifying to happen! I wasn't able to make it to an exit and had to pull off on the side of the interstate and await a tow. I took it to the dealership I purchased it from. Documentation stated that a fault code DTC P019100 (fuel rail pressure sensor) was identified. However, this sensor was not replaced. Instead, my paperwork indicates that the "air box was installed incorrectly at manufacturing and they fixed it." On August 13, 2026, I experienced a similar issue on a 45MPH secondary highway. I was able to restart it and get it to a Hyundai dealership a mile away (not the dealership I purchased from). After 5 days of no vehicle (and no loaner provided), the same code DTC P019100 presented and they replaced fuel rail pressure sensor. September 25, 2026, a critical error popped on my screen. Hyundai app says DTC P042000 (powertrain fault code). It's currently in the shop with the dealership I purchased from. I did put in a safety claim with Hyundai Customer Care and suggest all other users do the same to hold Hyundai accountable. I will attempt to update this if I can after resolution is hopefully identified. I'm very close to turning this car in and getting a more reliable vehicle. Which is unfortunate because I qualified for 0% APR financing when I purchased and I'll never get that deal again.

Filed Sep 23, 2026 · Acceleration, Engine · SC

The primary component failure is within the hybrid powertrain control architecture, specifically involving the transmission control system or internal transmission clutches/modules (TCM/HEV control module). The vehicle utilizes a 6-speed automatic transmission integrated with an electric motor. During highway cruising, the transmission locks into a single gear ratio or a protective "limp mode," resulting in a total loss of normal acceleration despite high engine RPMs. The vehicle and its components are fully intact and available for inspection upon request. My safety and the safety of others were put at severe risk because the sudden, unexpected loss of acceleration occurred while traveling at highway speeds in active traffic. When the transmission locked and power cut out, the vehicle rapidly shed speed and dropped to a hazardous 20-35 mph on a high-speed roadway. This created an immediate, extreme risk of a high-speed rear-end collision from vehicles traveling behind me, forcing me to make defensive lane changes toward the shoulder without normal engine power to navigate safely. This happens without warning no notices or errors pop up when it happens. The issue is intermittent and has been presented to an authorized Hyundai dealership technician multiple times. Because the vehicle often resets its communication modules and temporary limp-mode parameters once the ignition cycle is turned completely off and back on, the dealership technicians have encountered difficulty pulling permanent historical diagnostic trouble codes (DTCs). However, the failure patterns match a widely documented, repeating issue among 2025 Santa Fe Hybrid owners regarding HEV torque calculation or loose engine wiring harness pin tension