2013 Kia Sorento lighting problems

Tl* the contact owns a 2013 kia sorento. Approximately two weeks after the contact purchased the vehicle, she began smelling tar. The vehicle ws taken to the dealer, but the technician was unable to diagnose the failure. The failure recurred and the headlights burned out. The dealer replaced the headlights and stated that there was a recall; however, the contact did not receive any recall notice. Approximately three weeks ago, the failure recurred and the driver seat began to burn, jamming the driver side door.

One of my tail lights went out. Right after I changed it, my driver side head light went out. I changed the bulb and it worked for a short time. I did this 2 more times in 2 months.then I had a repair shop change the bulb and they said the connector was melted and it was unsafe. They installed a new connector and bulb. Within 2 weeks the passenger side went out. The connector was also melted on that side. This went on with the tail lights and headlights for months.