Vehicle Speed Control Related Problems of the 2003 Mercury Grand Marquis

Table 1 shows eight common vehicle speed control related problems of the 2003 Mercury Grand Marquis. The number one most common problem is related to the vehicle speed control (eleven problems). The second most common problem is related to the accelerator pedal (five problems).


Recently reported Vehicle Speed Control problems of the 2003 Mercury Grand Marquis

The Vehicle Speed Control problem

I started Mercury with foot on break like normal. Shifted into reverse. Car accelerated backwards at full speed. Brakes did not stop car. Attempted to shift into neutral but went into drive instead. Car accelerated forward at full speed with my foot still on break.   Read details...

The Accelerator Pedal problem

- on 12/20/06 while exiting the driveway his 2003 Mercury Grand Marquis rear ended another vehicle. The contact try to apply the break pedal, but couldn't get the vehicle to stop on time because the brake pedal is 4 inches higher than the accelerator pedal.   Read details...

The Car Accelerates On Its Own problem

The contact owns a 2003 Mercury Grand Marquis. The contact stated that sudden acceleration was experienced in the vehicle. The vehicle began gradually lunging forward sporadically until it became harder for the contact to stop the vehicle when the failure occurred.   Read details...


Vehicle Speed Control related problems in other Mercury Grand Marquis model year vehicles:



Fuel Economy of Grand Marquis Vehicles
Grand Marquis Service Bulletins
Grand Marquis Safety Recalls
Grand Marquis Defect Investigations