Three problems related to accelerator pedal have 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.
While applying the brake pedal vehicle accelerated uncontrollably. Driver was able to maintain control of the vehicle, and pulled over. Vehicle was taken to the dealer for inspection numerous times, but mechanic could not duplicate the problem.
The adjustable pedal can go back or forth when hitting the brake pedal the gas pedal is so close they hit together.
With the consumer's foot on the brake, the vehicle sudden accelerated and started shaking. (nar).
| Vehicle Speed Control problems | |
| Cruise Control problems | |
| Accelerator Pedal problems | |
| Car Accelerates On Its Own problems | |
| Accelerator Stuck problems |