One problem related to horn assembly has been reported for the 2003 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Kia Motor Optima based on all problems reported for the 2003 Optima.
The engine light came on. The doors would lock without any prompts. The horn would honk while parked in the garage. The car was checked out on the computer and the driver's air bag needs replaced and there is an electrical problem.