2022 Kia Sorento electrical system problems

Last Tuesday, August 16, I parked in the driveway at around 8 PM. After about 2 hours I heard car alarm. I looked out window and saw flames engulfing rear of vehicle. Called 911. Firefighters extinguished flames. Fire crew stated fire was likely electrical and started near tow hitch receptacle. Tow hitch was installed by Kia dealer weeks after I bought car; they told me it was an OEM hitch. I'd never used the hitch until the day of the fire. That afternoon I bought a Kuuat bicycle rack with lights.

The contact owns a 2022 Kia Sorento. The contact stated that while driving at an undisclosed speed, the Auto Hold feature activated, and the check engine warning light and several other unknown warning lights illuminated. The vehicle was taken to an independent mechanic, and DTCs U0164, U0123, U01B0, and U1131 were retrieved. The independent mechanic stated that the battery needed to be replaced. The independent mechanic also informed the contact of an unknown recall; however, the VIN was not under recall.