There are 4 owner-reported lighting complaints for the 2003 Buick Regalin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
THE BRIGHT /DIM HEADLIGHT CONTROLLER HITS THE BACK OF THE STEERING WHEEL IF THE STEERING WHEEL IS IN A POSITION DURING A RIGHT DIRECTION CURVE IN THE ROAD. THIS HAS CAUSED THE SWITCH TO CATCH IN BETWEEN SETTINGS AND THE HEADLIGHTS TURN OFF. AN EXAMPLE OF THAT USE WOULD BE GOING AROUND A CURVE AND NEED TO TURN BRIGHT LIGHTS OFF DUE TO ONCOMING TRAFFIC. TO GET THE HEADLIGHTS BACK ON, THE BRIGHT / DIM SWITCH HAS TO BE ACTIVATED AGAIN. THIS VEHICLE WAS PURCHASED NEW BY MYSELF IN 2003 AND HAS BEEN A PROBLEM FOR AS LONG AS I CAN REMEMBER SINCE OWNING THE CAR. I FORGET ABOUT THE PROBLEM WHEN I GET HOME SO NOW I FINALLY REPORT IT IN 2018. THE PROBLEM APPEARS TO BE A FACTORY DEFECT BECAUSE THE SWITCH AND STEERING WHEEL ARE NOT DAMAGED. THE INFORMATION ABOUT WHEN THE INCIDENT HAPPENED IS ONLY THE LAST INCIDENT.
TL* THE CONTACT OWNS A 2003 BUICK REGAL. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE HEADLIGHTS FAILED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THEY ADVISED THE CONTACT THAT THE MULTI FUNCTION SWITCH EXPERIENCED AN INTERNAL SHORT. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS APPROXIMATELY 29,300. UPDATED 02/15/12*BF
WHEN TURNING,THE ENGINE QUITS.2003 BUICK REGAL I AM MECHANIC FOUND THE IGNITION SWITCH WEAK AND WHEN YOU ENGAUGE TURN SIGNAL SWITCH THE ENGINE STALLS. *TR
HEADLIGHTS SUDDENLY WENT OUT WHILE DRIVING. TRIED THE MANUAL DASH SWITCH NO LUCK. LIGHTS SUDDENLY CAME ON FOR 5 SECONDS, THEN WENT OUT AGAIN. FOG LIGHTS AND BRIGHT NOT OPERATING. ON THEN OFF AGAIN SEVERAL TIMES, THEN OFF UNTIL I GOT HOME. NEXT DAY EVERYTHING OPERATED CORRECTLY. TRIED TO REPEAT FAULT DURING DAYLIGHT AND AT NIGHT WITH NO SUCCESS. *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 26, 2026