Problems · by component
2003 Buick Regal electrical system problems
36 owner complaints to NHTSA about the 2003 Buick Regal cite electrical system, 35% of all 104 complaints for this model year.
Complaints
36
35% of all complaints
Crashes
0
Reported by owners
Fires
2
Reported by owners
Injuries
0
Reported by owners
What owners say about the electrical system
Verbatim from NHTSA complaints, newest first
“UNANNOUNCED TO PURCHASERS, THE BUICK REGAL HAS A REDUNDANT AND DEFECTIVE SECURITY IGNITION SYSTEM THAT PREVENTS THE VEHICLE FROM BEING ABLE TO START WITH THE KEY AFTER THE BATTERY IS DISCONNECTED. IT MUST NOW BE TAKEN TO A DEALERSHIP TO BE DIAGNOSED AND FOR A COSTLY REPAIR. IT WAS STATIONARY, AND THE BATTERY DRAINED DOWN WITH A PHONE CHARGER HOOKED UP. EVEN FOLLOWING THE FACTORY KEY SEQUENCE, THE BATTERY RUNS DOWN BEFORE THE CODE CAN BE CLEARED AND RE-ESTABLISHED.”
“MY 03 BUICK REGAL LS WILL SHUTOFF SOMETIMES WHEN TURNING LEFT, OR WHEN USING THE TURN SIGNAL. I CAN NOT FIND THE PAPERWORK, BUT I REMEMBER A RECALL FOR THIS ABOUT 5 TO 8 YEARS AGO. WE DID HAVE IT ADDRESSED, BUT THE PROBLEM HAS COME BACK. TODAY'S DATE IS 1/9/17 AND MY WIFE HAD THIS HAPPEN AGAIN TO HER ON 1/4/17 WHILE MAKING A LEFT HAND CURVE. SHE WAS NOT TURNING OR USING HER TURN SIGNAL. I ONLY HAD IT HAPPEN TO ME ONCE WHILE MAKING A LEFT TURN USING MY TURN SIGNAL. MY MOTHER ALSO HAS AN 03 REGAL GS AND ALSO EXPERIENCED THIS SAME PROBLEM. I CONTACTED THE DEALER WHERE I PURCHASED THE CAR AND THEY TOLD ME THERE IS NO CURRENT RECALL NOR WAS THERE EVER ONE FOR THIS PROBLEM, BUT I KNOW WE HAD IT ADDRESSED ABOUT 5 TO 8 YEARS AGO.”
“TL* THE CONTACT OWNS A 2003 BUICK REGAL. AFTER DRIVING THE VEHICLE AND SHIFTING INTO PARK, THE KEY FAILED TO EJECT FROM THE IGNITION SWITCH PROPERLY. THE IGNITION SWITCH WAS IN THE OFF POSITION AND TOOK MORE THAN TWENTY ATTEMPTS FOR THE KEY TO BE REMOVED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CONTACT DID NOT FEEL SAFE IN THE VEHICLE. THE FAILURE MILEAGE WAS 39,000.”
“TL* THE CONTACT OWNS A 2003 BUICK REGAL. THE CONTACT STATED THAT THE VEHICLE FAILED TO START AND ALL THE WARNING INDICATORS FLASHED ON THE INSTRUMENT PANEL. THE VEHICLE EVENTUALLY RESTARTED. THE VEHICLE STALLED FIVE TIMES THE SAME DAY. THE CONTACT STATED THAT THE FAILURE OCCURRED TWELVE TIMES BEFORE THE LAST FAILURE. THE DEALER REPLACED THE IGNITION SWITCH. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 69,800.”
“TL* THE CONTACT OWNS A 2003 BUICK REGAL. WHILE DRIVING APPROXIMATELY 40 MPH THROUGH A BUSY INTERSECTION, THE VEHICLE SUDDENLY SHUT OFF. AFTER RESTARTING THE ENGINE, THE VEHICLE OPERATED NORMALLY. THE CAUSE OF THE FAILURE WAS NOT DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 148,000.”
“TL* THE CONTACT OWNS A 2003 BUICK REGAL. THE CONTACT STATED THAT THE VEHICLE WAS ABLE TO BE STARTED WITHOUT THE KEY IN THE IGNITION. THE FAILURE RECURRED ON SEVERAL OCCASIONS. THE CONTACT ALSO STATED THAT IT WAS DIFFICULT TO UNLOCK THE STEERING WHEEL ON SEVERAL OCCASIONS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE IGNITION SWITCH WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 72,000.”
Showing 6 of 36 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.