Two problems related to power window 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.
There was a failure in the power operated window module/switch that caused the windows to malfunction. There is a TSB 637533 for this issue. When the switch was operated on the driver's side for the passenger side window, the drivers side window would also opened/closed. This was an intermittent problem at first then over time became progressively worse. The manufacturer was notified but has not contacted the consumer about the problem.
When the vehicle is started, an unusual noise occurs in engine, especially in the morning, then gradually gets louder/more frequent. One day in particular, the vehicle was parked(hot weather), and when the vehicle was started, the noise started again, and was extremely loud/distracting to others. The dealer cannot duplicate, stating that all the models sound this way and is the timing chain. Other problems are as followed: radio static/window static-when the ignition is on(may be a loose wire, and when the brakes are applied, it engages the brake light switch. The consumer requests that the problem(s) are fixed before the warranty expires. Scc.