Hyundai Tucson Hybrid Electrical Problems

Electrical complaints by model year

Which parts fail

• Alternator/generator/regulator
  1
• Horn
  1
• 12V/24V/48V battery
  1

Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).

Mileage when the problem started

• Under 25k
  788%
• 25k–50k
  00%
• 50k–75k
  113%
• 75k–100k
  00%
• 100k–150k
  00%
• 150k+
  00%

What owners report

I purchased my vehicle from Ideal Hyundai on 04/23/26. On 06/22/26 (less than 2 months later), I was driving to work and the car started to lose power. The display said to check hybrid system and stop safely. After 10 minutes, I was able to drive the car 3 more miles to work. I took it to Ideal Hyundai the next day. I got the car back on 06/26/26 after they said they address the issue and the open recall. Two weeks later, on 07/23/26 I was driving home on a busy highway when the car began to lose power again. We were able to get to the side of the road but were still in a dangerous position. Within minutes, the car's power went out and fuel drained from the car. We used Hyundai Roadside Assistance and they towed it to the nearest Hyundai dealer (Antwerpen). They told me the next day that the car had serious issues and another recall. They said they'd repair it by the end of the week. …

On approximately [redacted], while traveling on [redacted], the vehicle's automatic emergency braking system engaged abruptly and without warning. The vehicle ahead had stopped with sufficient distance for a normal, controlled stop. Despite this, the automatic braking system activated suddenly on the 45-mph roadway, causing my left arm to jam and my head to jolt forward. Within the following week, two additional incidents of similar abrupt automatic braking occurred. Recall Discovery I subsequently researched the vehicle online and discovered an active recall for sensitive braking on this year, make, and model. The recall number may be researched and verified via the vehicle VIN number provided above. I was never notified of this recall by either the manufacturer or Element Fleet Management. …

The contact owned a 2025 Hyundai Tucson. The contact stated that while the vehicle was parked and turned off, the rear of the passenger seat caught fire. The vehicle was unoccupied at the time of the fire. The fire was extinguished twice by the Fire Department since the fire reignited after the first time the fire was extinguished. A fire report was filed, and a report number was provided. The cause of the failure was determined to be a lithium battery failure. A police report was also filed. The dealer was contacted. The vehicle was not diagnosed or repaired. The vehicle was destroyed. The manufacturer was made aware of the failure. The failure mileage was approximately 800.

The contact owns a 2025 Hyundai Tucson. The contact stated that the vehicle was included in NHTSA Campaign Numbers: 26V400000 (Electrical System) and 26V316000 (Forward Collision Avoidance); however, approximately 15 minutes after the software updates were completed, the lane keep assist failed intermittently, causing the vehicle to veer out of the intended lane. No warning lights illuminated. The vehicle was returned to the dealer; however, the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was approximately 9,419.

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.

The contact owns a 2024 Hyundai Tucson. The contact stated that while operating the vehicle, the horn pad was pressed; however, the sound coming from the horn was extremely low. The vehicle was not yet repaired. The local dealer was notified of the failure, and an appointment was scheduled for the repair. The contact stated that the horn had been replaced twice for the same failure. The manufacturer was notified of the failure. The failure mileage was 12,907.

1. Sometimes vehicle does not start. Only starts if battery reset button pushed. 2. Sometimes vehicle while moving has delayed braking after juddering. Only stops when car stopped and restarted. 3. Sometimes vehicle while moving suddenly revs, RPMs spike until car stopped and restarted. Engine revs but does not shoot forward. 4. Spookiest of all, while moving car suddenly stops accelerating. Pedal on the floor and it is coasting to a stop. When car stopped, and turned off, then it will work. Had we been on the interstate we would have died, These incidents were sporadic and occurred on and off during the month of April and May. Each of the above occurred numerous times to different drivers. Service at two locations were unable to ID. We sold the moving death trap to one of the Hyundai dealers who could find no mechanical problems with the vehicle. The vehicle was terrifying to drive. …

The ABS, ! Brake and Auto Hold lights activated. I took in into the Hyundai Joplin, MO dealership on May 2, 2024. They could not find any thrown codes and suggested it was most likely the "IEB Module" which they replaced and after doing so, the warning lights remained activated. As of May 22, 2024, they are ordering a new IEB Module to install (backordered into June). This seems oddly similar to previous ABS and brake problems of earlier models and makes me feel uneasy with the safety of this vehicle should they ever get it remedied.

Related recalls (2)

NHTSA investigations