Mercury Grand Marquis owners have reported 3 problems related to power assist brake vacuum (under the service brakes category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Grand Marquis based on all problems reported for the Grand Marquis.
While driving at approximately 10-15 mph made a sudden stop with enough space in front, but abs brakes did not work or hold and vehicle kept coasting, causing a rearend accident. The power brake booster was defective.
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all problems of the 2000 Mercury Grand Marquis
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Brakes failed several times prior to replacement, brakes continued to failed due to faulty booster. Mjs.
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all problems of the 1999 Mercury Grand Marquis
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The brakes are noisy due to failure of the brake booster, five replacement booster have been installed, however continue to fail.
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all problems of the 1996 Mercury Grand Marquis
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