2004 Grand Marquis - driver window goes down on its own.

[Big Bruce]

The car has 90,000 miles, and has had no problems. Every once in awhile the driver window will lower without me pushing the button. It happens if the car is being driven or just parked with the key on acc. Thanks!

[Philbert777]

Originally Posted by Big Bruce

The car has 90,000 miles, and has had no problems. Every once in awhile the driver window will lower without me pushing the button. It happens if the car is being driven or just parked with the key on acc. Thanks!

Sounds like it could be corrosion in window switch, because of the copper connections in the window switch, when ever water could have gotten in, it might have changed the copper contacts a greenish corroded color and is actually acting as a conductor and makes contact.