One problem related to warning light on has been reported for the 2004 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Mercury Grand Marquis based on all problems reported for the 2004 Grand Marquis.
Tl- takata recall. The contact owns a 2004 Mercury Grand Marquis. The contact stated that there was a sudden loss of power steering which was randomly progressing with no warning. The contact stated that when the steering wheel was turned left or right, the contact had to apply force to prevent the steering wheel from going straight several times. In addition, the air bag warning light was randomly flashing. The vehicle was to be taken to a dealer for inspection and diagnosis. The manufacturer was notified of the failure. The approximate failure mileage was 150,000. Dyd.
| Air Bag Not Deploy problems | |
| Air Bag problems | |
| Warning Light On problems |