Two problems related to brake electric antilock 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 contact stated the vehicle has been to the dealership numerous times because the brakes are defective. When pressure is applied to the brake pedal, the pedal intermittently goes to the floor. Most often this occurs while starting the vehicle and placing it in gear. On one occasion a power booster was replaced on the brake system. This did not correct the problem. On another occasion, there was a pedal pressure test performed. The dealership determined the pressure was a little low, but not enough for concern.
When applying brake pedal pressure the pedal goes past the accelerator to the floor, most often this occurs when starting the vehicle and placing it in gear. When this occurs it is easy to hit the gas pedal as well when trying to apply brake pressure. This causes the tires to squeal and the car to lunge forward. Has been to a dealer who said he would have a service manager call the consumer about this problem, but he never returned the call. The service representative noted there was nothing wrong. No repairs or changes have been made.