Mercury Grand Marquis owners have reported 1 problem related to automatic transmission cooler (under the power train 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.
: the contact stated while shifting from drive to park the gear locked in reverse and while driving at low speeds at night the headlights would not go from low beam to high beam. Additionally, the tires slowly deflate. The dealership was alerted. They repaired the gear column, headlight switch and suggested to check the tires weekly and add air.
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all problems of the 2004 Mercury Grand Marquis
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