Hyundai Tucson electrical problems

Blindspot detection did not pick up car on my right side two times. Front collision warning is effected by the angle of the sun at certain times of the day. Dashboard dims randomly. Could be for a minute or much longer. Could dim on and off, or stay dimmed for over twenty minutes. Brought the car in twice for this problem. Claimed nothing found and tech reset the codes. Bought it in two weeks later, stating problem not fixed. Told them to check connection, suggested they might want to replace the cables, and its a known problem. Again, reset the codes. Only this time they fiddled with the dimmer control on the console and I can no longer adjust the setting.

The contact owns a 2025 Hyundai Tucson. The contact stated that the horn was inoperable. While another driver was reversing, the contact attempted to use the horn to alert the driver, but the horn failed to operate as intended. There were no warning lights illuminated. The vehicle was taken to a local dealer, where it was confirmed that the horn was not functioning properly. The dealer informed the contact that the necessary parts to repair the vehicle were on backorder. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 8,400.

When My wife was driving our car on the highway today to work, the car suddenly threw a "check hybrid system - pullover safely" light when she was at highway speeds. She was able to luckily pull over quickly onto the shoulder before the car completely powered down. This is incredibly dangerous. She had to click on the reset 12 volt hybrid battery button in the car to get it started again but the complete loss of power at highway speed was very upsetting.

While driving on a public road, the vehicle experienced multiple simultaneous, dangerous malfunctions: Dashboard Warnings: All lights illuminated, including engine (flashing), ABS, traction control, airbag, TPMS, and parking brake, which stayed on though disengaged. Engine & Transmission: Tachometer fluctuated wildly in park; engine revved without accelerator input. Shifting to drive/reverse caused unexpected “kicks.” Vehicle sometimes failed to move when pressing gas, requiring engine restart. Driving Issues: Speedometer read 0 or jumped inconsistently. RPM continued erratically while maintaining speed without accelerator. Steering became extremely difficult. I immediately determined the vehicle was unsafe to drive and returned home with it, which was only a couple miles away. Follow-Up: Hyundai advised dealership diagnosis; they suggested a backup camera module will resolve the issues I experienced in entirety, but also in the same email stated that they could not guarantee it would resolve all of the issues I experienced. This is the second major engine/powertrain failure: first approximately ~70,000 miles (full engine replacement), current approximately ~95,000 miles (approximately ~25,000 miles post-replacement). Recurrence indicates a serious, unresolved safety defect. I am deeply concerned for passenger safety, including children. Other owners report similar issues; the attorney general’s office advised reporting to NHTSA. Summary of Safety Risks: sudden loss of control/power, erratic acceleration, dashboard failures, steering resistance, unpredictable handling, recurrence of major defect. I am submitting this report to NHTSA to request investigation of these recurring defects. I do have video documentation of all of this, as well as ALL written communication with Hyundai National Consumer Affairs and the dealership. I am having a hard time uploading them because of the file limits. Please let me know if any of this will be helpful to you.

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the instrument cluster displayed a blank image. The vehicle was taken to the dealer, where it was diagnosed with a rear-view camera display failure. The contact was informed that the rear-view camera display needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the vehicle had been taken to the dealer multiple times for failure. The contact referenced an unknown recall repair with a similar failure description; however, the VIN was not under recall. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 100. The VIN was unavailable.

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the instrument cluster independently turned off. In addition, the contact stated that an error code with an unknown message was displayed. The vehicle was taken to the dealer; however, the failure was not diagnosed. The contact stated that the vehicle had been taken back to the dealer three times since the vehicle was purchased. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was unknown.

During normal winter operation with the heater in use, the center console area becomes excessively hot. I have measured surface temperatures exceeding approximately 130°F using an infrared thermometer. The affected area includes interior touch surfaces, cup holders, and a factory-installed wireless phone charging pad. The heat appears to originate from HVAC ducting routed through the center console to supply the rear seat vents. Closing the rear vents does not reduce the console temperature, indicating heat transfer through the ducting rather than airflow. The condition is most severe after a warm-soak cycle (driving to operating temperature, briefly parking, then driving again). When a phone is placed in the intended storage or wireless charging area, the device overheats and triggers thermal protection warnings. The console surfaces also become hot enough to present a potential burn risk with prolonged skin contact. These temperatures exceed recommended ambient conditions for consumer electronics and lithium-ion batteries in a normal-use interior storage and charging location. The issue was reported to a Hyundai dealership. The service department stated the heat was caused by the rear HVAC duct and considered the condition “normal.” No repair, insulation review, or corrective action was offered, and no specific temperature measurements were provided in writing. Hyundai Consumer Affairs directed me to return to the same service department, despite the concern remaining unresolved. This condition occurs during normal vehicle operation and represents a potential interior thermal safety concern.