2022 Hyundai Tucson Hybrid

On June 1, 2023 I was driving on a highway, suddenly lost the ability to accelerate, the car suddenly losing power and a warning message said to leave the road and have hybrid system checked. I pulled over, car idling, reentered highway only able to use low speed ( was 55 mph zone) to get to an exit a short distance away I had to be towed, the warning message still appearing at the dealership but no problem could be identified. This was an extremely dangerous situation, I have not had a problem like this again but remain concerned about a reoccurrence I have reached out to Hyundai about my concerns about 1) how roadside assistance was handled (response obtained) and 2) my concerns about this vehicle failure. I have reached out again this month to Hyundai, last contact they did not have the correct car or case number, have not called back since . This is case #21511789

Driving interstate right lane cruise control set at 73 mph. Car in front of me proceeded to leave lane to the left in order to pass 18 wheeler in front of it. Noticed my car felt different at that time and looked at dashboard to see cruise control now set to 110 mph and speed almost 90 mph. Documented with photo. Disabled cruise with breaking. Shared this on Tucson forums Reddit and Hyundai Forums with confirmation that this has and is happening.

The contact owns a 2022 Hyundai Tucson Hybrid. The contact stated while driving approximately 45 MPH, the vehicle independently decelerated to 20 MPH with the RPMs falling and the vehicle almost stalling. There was no warning light illuminated. The contact stated that the vehicle failed to exceed 20 MPH. The contact pulled over to the side of the roadway, turned off the vehicle, and waited for approximately 5 minutes. The vehicle was restarted and operated normally. The vehicle was taken to the dealer however, the cause of the failure could not be determined. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 25,714.

1) Transmission: while driving car jerks. when I’m accelerating from a stop sign or stop light the wheels kind of feel like they’re spinning/shaking and driving over gravel when I accelerate, before it actually starts and shifts gears. Car accelerating but not moving. 2) Not safe. Almost hit other cars around and people. 3) Dealer confirmed and replacing with new transmission. 4) No warning signs

On 9/3/23, driver was waiting at a stop sign to turn left. When driver accelerated into the highway, there was no power and the vehicle would only go 5-10 mph. Warning lights came on to check the hybrid system with the HEV indicator light. Driver pulled over. Restarted car and engine was stuttering. Was able to drive a few miles to a safer location. Started car on 9/4/23, again it had a rough start. Driver waited until the vehicle sounded normal. The vehicle immediately lost power and could not accelerate when on the main road. Called Hyundai and they were unconcerned. We are in remote Alaska, 250 miles from a dealership. Because it happened on a holiday weekend, we have been unable to contact the service department yet. Vehicle is available to be inspected. Safety is a huge risk because the car suddenly stops propelling forward. I'm afraid we will get rear-ended because of the sudden loss of power. It is a danger to ourselves and others. I'm also concerned that we will be stranded because the car has to be stopped when this occurs. We were supposed to be enjoying a trip for a week, and now we don't trust the vehicle and will likely need to go home early and lose hotel costs. This issue will wind up killing someone because there are reports that these Hyundais are stopping in the middle of the highway. Please hold Hyundai accountable.

The car shook and then lights and alarms went off indicating something went wrong with the hybrid system. The car stopped accelerating, would shake, and then accelerated no more than 10 mph. It was absolutely crazy! Luckily, the highway that I was traveling on was not a busy one at the time because all I thought was this could have been a major accident if on a fast moving freeway. I managed to pull over and started reading online about this issue occurring with other customers who purchased the same or similar vehicle. So, I found a post and had shut the car off for 5 minutes, then restart and sit for 10 minutes, and then the car should work. It did! However, during the time of waiting I did reach out to the dealership and they said if the car is working there is nothing they could do. So, I assumed it was safe to use travel to work for a meeting and set up my classroom for the start of the new school year. On my way home from school, the issue happened again. I immediately contacted the dealership and was able to get the car to them. They started running diagnostic tests and currently have the vehicle on hand. However, I don't really feel safe now with this car given the circumstances. What if this should happen again? What if this happens to me or someone else who is traveling on a busy highway and it causes injury or even death to an accident. The engine light came on, battery light flickered on and off, the car shook, the car's HEV system warning was going off, etc. Please help and look into this matter. I do not have any documentation of repair as the car currently sits at the dealership, but I was so upset thinking about what could have happened and felt the need to report the issue.

05/11/2023 Driving on Highway (Work Zone) Dash Flashed Hybrid System Failure - I was in the fast lane with Tractor trailer in front ,behind ,and alongside me - Gas pedal stopped working at that point nothing worked - managed to coast to the shoulder (could have been killed) Had it towed to Hyundai - They checked the computer and said nothing was wrong . that means if we were killed - Hyundai would be off the hook and they would say human error because they said no faults were stored and the codes were clear

I have noticed this only happens on very cold days and it has Happened 7 times now. The car will be driving along and suddenly lose all power to the point you cannot accelerate above 15 MPH even if you floor the gas pedal. While this happens the Battery indicator will drop to 0 and then a Message Check Hybrid System pops up. Once the car comes to a complete stop the parking brake will automatically engage and will not release. If you shut the car off and turn it back on, A message please wait while battery charges is on the display and will not disengage the parking brake until the battery charges up to about 35-40% . The dealer has looked at the car 4 times and found nothing as no codes ever registered. I even opened a case direct with Hyundai Consumer affairs and they can not seem to find anything wrong with the car nor do they think it is an Issue. I find this to be extremely unsafe for a vehicle to randomly lose power and refuse to come out of park regardless of where on the road you happen to be when this occurs. It has not happened since the temperatures have been above freezing, but with winter a few months away. I completely fear for my safety.