A spring in the seat belt buckle may wear or fail, causing the airbag light on the instrument panel to illuminate. Failed buckles will require replacement.Google+
Car Problem Reports
Mercury Grand Marquis Spring in Seat Belt Buckle May Fail
Mercury Grand Marquis Problem
Average Mileage: 69,839 mi (22,000 mi - 145,000 mi)
Visitor, 2006 Mercury Grand Marquis, 36,000 mi
seatbelt airbag light on - dealer replaced pretensioner ~ $60 but light and beep continued - ran another check - whole seatbelt assembly had to be replaced - part $356 labor $254 (3 hours) 1st and hopefully only big issue I have had with this car.
Visitor, 2006 Mercury Grand Marquis, 99,685 mi
I too have the airbag light on. I counted the flashes and it is code 33.
Visitor, 2005 Mercury Grand Marquis, 106,500 mi
2 of my 2005 Grand Marquis' seat belt buckles have failed.
Visitor, 2007 Mercury Grand Marquis, 90,000 mi
Air bag light blinks and then stays on. Blinks appear to be 33
Just noticed it, no fix to date.
Visitor, 2006 Mercury Grand Marquis, 68,000 mi
Air bag light on, some beaping. Dealer says it's the seat belt assembly, will cost about, $500.00 to fix.
Visitor, 2005 Mercury Grand Marquis, 30,000 mi
I had a problem with my air bag light on the instrument panel staying on all the time. I went to my garage and they had to replace both the right and left side belts. My car only has 30,000 miles on it and it does not seem as if this should have occurred for this short time.
Visitor, 2005 Mercury Grand Marquis, 60,000 mi
Ford had to replace first the passenger side seat buckle due to air bag light being on and now the drivers side has the same problem very expensive to repair.
Visitor, 2005 Mercury Grand Marquis, 86,000 mi
Air bag light stays on Mechanic detected seat belt pretensioner failure.
Visitor, 2005 Mercury Grand Marquis, 42,300 mi
seat belt blinking
Visitor, 2000 Mercury Grand Marquis, 145,000 mi
Drivers Seat belt Latch not holding, releases with pressure on belt, may be spring n latch. looking to find replacement driver Grey seat belt latch with wires and plug.