There are 3 owner-reported electrical system complaints for the 2020 Kia Sedonain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2020 Kia Sedona. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power with several unknown warning lights illuminated. The vehicle was towed to the dealer, where the vehicle was diagnosed with battery failure. The contact was informed that the battery needed to be replaced. The vehicle was not repaired; however, the failure recurred when the dealer attempted to test-drive the vehicle. The manufacturer was made aware of the failure. The approximate failure mileage was 77,000. The VIN was not available.
The contact owns a 2020 Kia Sedona. The contact stated while driving 40–45 MPH, the check engine warning light illuminated. The contact stated that while driving at an undisclosed speed, the headlights and taillights became inoperable. The contact also stated that the oil level was low after checking the dipstick. The driver's side window was stuck in the down position. The contact depressed the window button, but the window failed to roll up. The vehicle was taken to an independent mechanic, and the contact was informed that there was a leak in the trans axle boot, and the 02 sensor and trans axle boot were replaced. The vehicle was taken to the local dealer, where it was diagnosed that the headlights and taillights needed to be replaced. The dealer performed an oil pressure test, which indicated that the oil level was a 1/2 quart low. The vehicle was repaired, but the failure recurred. The contact stated that there was water inside the headlight housing. The vehicle was taken back to the same local dealer, and the contact was informed that there was no warranty coverage on the vehicle. The manufacturer was contacted, but there was no additional assistance provided. The failure mileage was approximately 79,000.
Driving down the interstate at 70mph and the vehicle suddenly began to brake and the forward collision warning light illuminated along with the check engine light. The car stopped on the interstate and this happened at 1:15 am and it was in a rural area and it was pitch black outside. Luckily no one plowed into the back of the car. Was able to restart the car and was barely able to get it to the side of the road before it shut down again. 6 miles to the nearest exit attempted to get the car off the highway. After several attempts and turning off every electric accessory and sensor was able to get the car to the exit. KIA toed the car to the nearest dealership the next day. They discovered that the wiring harness was chewed up in several places and caused numerous shorts circuits and malfunction codes. I own several vehicles that are parked in the same area and this is the only one that has chewed up the wiring. My daughter and 2 of the grandchildren were in the car when this happened and they could have been killed if someone had plowed into the back of them at 70+ mph. This is a 2020 Kia Sedona and I'm being told that this is not covered under warranty. There is something wrong here seeing how this only happened to this car and not my other cars nor my boat. The car is in the shop and will not be ready for a week or two and this happened more than 350 miles from my house. I have lost the use of this car and Kia refused a rental because they said it was not a warranty issue. I know Kia is having this same issue with many of their vehicles. Does it take people to die for this to be addressed? I hope not. My family could have easily been killed because of this. Luck is probably the only thing that prevented a tragedy here. The car has not been repaired yet so I don't have any documents to upload yet.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on May 4, 2026