2024 Hyundai Tucson Hybrid

While driving my 2024 Hyundai Tucson Hybrid at approximately 20-25 mph approaching a red light, a sudden and total loss of brake power-assist occurred. Upon applying the brakes, the pedal became instantly rigid and rock-hard. Despite pumping the pedal multiple times and applying heavy manual foot pressure, the vehicle failed to stop, resulting in a low-speed rear-end collision with a stationary car stopped at the traffic light. No dashboard warning lights or malfunction indicators illuminated during or immediately following the event. After the collision, the vehicle's ignition was turned off and then restarted. Following this power cycle, normal braking functionality temporarily returned. The low-speed impact displaced an ultrasonic sensor in the front bumper. This intermittent electronic brake failure poses a catastrophic safety hazard to pedestrians and occupants if it recurs at higher speeds

On Sunday evening [XXX] at [XXX] I was returning from Long Beach on the [XXX] home to Los Angeles, when I went under an overpass and my emergency braking system activated with an alarm and red arrow pointing to the left. There was no warning before this event. Then my lane assist stopped me from going over the line into traffic. A few minutes later the same thing happened again. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

My 2024 Hyundai Tucson hybrid has been returned to the dealership on 3/20/26 and 4/10/26 to replace failed rear shocks and are now scheduled for replacement on 4/27/26 under warranty. I was told by Matthews Hyundai dealership that the part may have been defective the first time but after having the shocks fail again it is clearly a defect in design. The bouncing and ride is dangerous. Rear shock failure is a major safety hazard because it severely compromises vehicle stability, drastically reducing control during braking, cornering, and emergency maneuvers. It leads to increased braking distances, excessive rear-end bouncing, poor handling, and accelerated wear on other suspension components, significantly increasing the risk of accidents. I do not want to have an accident due to a faulty part.

On March 6th, 2026, I spent the day running errands in normal driving conditions and it created a situation that did not charge the battery or switch to gasoline. Several error lights displayed seconds before the car died. The hazard lights failed within 15 minutes of waiting for a tow truck. The dealership service department charged the battery and gave me advice to run the car at least 30 minutes everyday even if runs only in the garage. They told me that it was user error because I don't need to drive a half hour per day. I am still attempting to determine the real issue and have it addressed.

The contact owns a 2024 Hyundai Tucson Hybrid. The contact stated that while driving in snow mode on an icy road at 25 MPH from a stop sign, the brake system suddenly became inoperable, and the vehicle traveled through a stop sign and crashed into an unknown GMC vehicle. The contact mentioned that there was no skidding, and the vehicle was in snow mode to enhance the driving experience. There were no warning lights illuminated. All the air bags deployed, and the driver was unable to see. The vehicle was towed to a tow lot. The contact sustained injuries to her head, resulting in a concussion, fractured ribs, and bruises on her foot from depressing the brake pedal, and medical attention was provided at the hospital. A police report was filed. There was no reported fire. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 9,000. The VIN was not available.

The contact owns a 2024 Hyundai Tucson. The contact stated that while the vehicle was parked, while attempting to enter the vehicle, the key fob failed to function as intended. The contact was unable to unlock the doors to the vehicle. The contact noticed that the battery was completely drained. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact was informed that the vehicle needed to be started daily to prevent the battery from draining. The contact stated that the failure was persistent. The contact stated that because of the persistent failure, the contact was afraid to drive the vehicle. The vehicle was taken back to the dealer; however, the failure was not duplicated. The manufacturer was made aware of the failure. The failure mileage was approximately 900.

Third time SUV was parked for multiple days without being started and the main battery did not keep the charge. First time was five days and required a battery jump. Then it was 22 days, and as expected, the battery did not keep the charge and required a jump. This week it was eight days and same thing happened. I know the SUV is a hybrid but the main battery should not be run down to not be able to start the engine after a short time not being started. My brother has a 2014 Ford product hybrid and does not have any battery issues when that hybrid vehicle is not started for a period of time.

The contact owns a 2024 Hyundai Tucson. The contact stated that while stopped at a red light with five vehicles in front of her, the vehicle suddenly accelerated and crashed into several unknown vehicles. The driver swerved and crashed into a cement truck to stop. There were no warning lights illuminated. A woman occupying another unknown vehicle sustained head injuries. The vehicle was towed to a body shop. The air bags deployed. A police report was filed. The driver did not sustain any injuries. There were no reported fires. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was 2,900.