There are 2 owner-reported lighting complaints for the 2004 Hyundai Sonatain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2004 Hyundai Sonata. The contact stated that the air bag warning light was illuminated and the fog lights were inoperable. The vehicle was taken to an independent mechanic who referred the contact to the dealer. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was approximately 92,000.
EMERGENCY FLASHERS BEGAN FLASHING FOR NO APPARENT REASON AND WOULD NOT BE TURNED OFF. THEN TRYING TO USE THE KEYLESS ENTRY DOOR OPENER, THE LOCKS BEGAN LOCKING AND UNLOCKING. WHEN THE CAR WAS RUNNING THIS STOPPED. WE TOOK IT TO THE DEALER AND THEY REPLACED THE ETAC MODULE, THEN THE ENTIRE FUSE BOX. AFTER RETURNING HOME, THE HAZARD LIGHTS AGAIN BEGAN FLASHING WHILE THE CAR WAS PARKED. THIS WOULD STOP AND BEGIN AGAIN INTERMITTENTLY. RETURNED TO THE DEALER AND LEFT THE CAR FOR SEVERAL DAYS. FINALLY A SWITCH WAS REPLACED AND THE PROBLEM CEASED. *TR
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 Apr 25, 2026