There are 2 stored owner reports matching the electrical system leading-label group for the 2009 Lincoln MKS 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)MY VEHICLE IS EQUIPPED WITH THE THX SOUND SYSTEM AND FOR THE PAST FEW MONTHS WHEN STARTING COLD THERE'S BEEN A LOUD CRACKING/POPPING SOUND WHEN FIRST STARTED. UPON TURNING THE CAR OFF THEN ON, THE SYSTEM SEEMED TO RESET ITSELF, HOWEVER, NOW THERE'S NO AUDIO COMING FROM THE SYSTEM YET IT SHOWS ON THE EQUALIZER THAT THERE SHOULD BE SOUND COMING OUT. I'VE DONE SOME RESEARCH AND FOUND TSB 09-5-1 BEST REFLECTS THE SITUATION THAT IS OCCURRING WITH MY CAR. I PURCHASED THE CAR LAST SUMMER AND THIS WAS MY FIRST WINTER IN THE VEHICLE. ALSO, WITHIN THE PAST 6 MONTHS, THE LEFT REAR DOOR WILL NOT UNLOCK PROPERLY WHEN USING EITHER THE KEY FOB OR THE MANUAL UNLOCK BUTTON. ONE HAS TO HAVE PERFECT TIMING WHEN UNLOCKING THE DOOR AND PULLING ON THE DOOR HANDLE FOR THE DOOR TO ACTUALLY BE UNLOCKED. *TR
2009 LINCOLN MKS. CONSUMER WRITES IN REGARDS TO VEHICLE IGNITION FAILURE. *SMD THE CONSUMER STATED THE VEHICLE HAS A KEYLESS IGNITION MODULE THAT WAS USED TO OPEN THE DOORS AND TO START THE ENGINE. RECENTLY, HE STARTED EXPERIENCING PROBLEMS WITH OPENING THE DOORS. THE CONSUMER HAD TO USE THE EMERGENCY BY-PASS SYSTEM TO START THE ENGINE. ON MARCH 12, 2014, THE CONSUMER RETURNED THE VEHICLE TO THE DEALER. AFTER AN EXAMINATION, THEY DETERMINED THE IGNITION MODULE NEEDED TO BE REPROGRAMMED. HOWEVER, THEY HAD TO GET SOME NEW EQUIPMENT, SO THE REPROGRAMMING, WAS NOT DONE THAT DAY. BEFORE THE CONSUMER WAS ABLE TO RETURN TO THE DEALER, HIS WIFE BECAME STRANDED IN A STORE PARKING LOT. THE DOOR WOULD NOT OPEN, AND A PASSERBY HAD TO HER HELP HER, UNTIL THE DOOR OPENED. SHE WAS THEN ABLE TO START THE ENGINE WITH THE EMERGENCY BY-PASS SYSTEM. THE NEXT DAY, THE CONSUMER WAS STRANDED IN THE SAME WAY. A STORE EMPLOYEE TOOK HIS IGNITION MODULE AND KEPT WALKING AROUND THE CAR KEYING THE MODULE UNTIL THE RIGHT PASSENGER DOOR OPENED. THE HE WAS ABLE TO START THE ENGINE WITH THE EMERGENCY BY-PASS SYSTEM. THE CONSUMER RETURNED TO THE DEALER. AN INSPECTION REVEALED THE SMART JUNCTION BOX NEEDED TO BE REPLACED.*JB
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.