Mercury Grand Marquis owners have reported 1 problem related to instrument panel speedometer/odometer (under the electrical system 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 instrument lights/gauges work intermittently. The digital odometer won't display.
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all problems of the 2007 Mercury Grand Marquis
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