Two problems related to air bag on-off switch have been reported for the 2005 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mercury Grand Marquis based on all problems reported for the 2005 Grand Marquis.
The light for the air bag blinks and will not stop as long as the switch is on, the manualin the car is no help or if it has a fix but says it is dangerous in case of an accident it may not work.
2005 Mercury Grand Marquis. Consumer writes in regards to seat belts and steering wheel press switch replacement. The consumer stated in June 2015, the driver's seat belt was replaced which was the cause of the air bag light being on.