Mercury Grand Marquis owners have reported 1 problem related to steering gear box sector shaft (under the steering 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 owns a 2004 Mercury Grand Marquis. The contact stated that while driving at approximately 25 mph, the steering wheel seized without warning. The failure recurred on multiple occasions. The vehicle was taken to an independent mechanic, who diagnosed that the steering shaft was corroded and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The approximate failure mileage was 194,000.
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