There are 2 owner-reported air bags & restraints complaints for the 2009 Mercury Grand Marquisin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. HE STATED THAT HE HIT A DEER IN DECEMBER OF 2009 AND THE AIR BAGS DID NOT DEPLOY. HE DROVE THE VEHICLE TO THE DEALER AND THE DEALER SAID THEY WOULD ORDER A NEW AIR BAG FOR HIM. THE DEALER STATED THAT THE PART IS ON BACK ORDER. THE CONTACT STATED IT HAD BEEN 5 MONTHS SINCE THE DEALER ORDERED THE PART. THE FAILURE MILEAGE WAS 10,000. THE CURRENT MILEAGE WAS 15,000.
TL*THE CONTACT OWNS A 2009 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE FRONT DRIVER SIDE WINDOW WAS ROLLED DOWN WHILE DRIVING 40 MPH THE SEAT BELT BECAME LOOSE AND THEN BECAME TIGHT ON THE CONTACTS CHEST EVERY 3 SECONDS. THIS ONLY HAPPENS WHEN THE FRONT DRIVER SIDE WINDOW WAS DOWN. THE CONTACT TOOK THE VEHICLE TO THE DEALER TWICE. THE DEALER TIGHTENED THE SEAT AS MUCH AS THEY POSSIBLE; HOWEVER, THAT DID NOT REMEDY THE MALFUNCTION. THE MANUFACTURER STATED THAT THEY'VE NEVER HEARD OF THIS ISSUE REGARDING THE SEAT BELTS. THE CONTACT IS CONCERNED THAT THE SEAT BELT WILL NOT FUNCTION PROPERLY IN THE EVENT OF A CRASH. THE FAILURE MILEAGE WAS 9,480.
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