There are 2 stored owner reports matching the lighting leading-label group for the 2004 Hyundai Sonata in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.