The official notice
Defect
Certain vehicles may be equipped with a 4-pin accessory trailer wiring harness kit that could fail. Over time, this could result in a short circuit that can cause the control module to overheat. Note: This recall only affects Kia Genuine 4-pin tow hitch wiring harness kits with the part number S9F67AC000. These kits may have been ordered at the time of a vehicle purchase, or purchased separately from a dealer as an aftermarket accessory.
Safety Risk
A short circuit could create a fire risk, even while the vehicle is parked and turned off.
Remedy
Kia will notify owners by mail and instruct you to inspect if your vehicle has a trailer wiring harness installed. If it does, Kia advises that you should park your vehicle outdoors, and away from other vehicles or structures until the recall repairs have been completed. The corrective actions for this recall are under development. As an interim repair, Kia will advise you to make an appointment at your local dealership to replace the 30 A "TRAILER" fuse with a 15 A fuse.