Two problems related to brake master cylinder have been reported for the 2000 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Mercury Grand Marquis based on all problems reported for the 2000 Grand Marquis.
Brake system totally failed while driving at approximately 20-25 mph going down a hill due to failure of master cylinder. Vehicle is a total loss.
After depressing brake pedal, and when pedal returns, a clicking noise occurs due to metal in brake assembly. Dealer cannot correct problem. The brake pedal makes thump noise when applying brake. The dealer installed brake pedal assembly, but the problem was not corrected. The consumer says possibly the master cylinder assembly failure could be the cause.