Windows not working

Tiny
EJAMIE43
  • MEMBER
  • 2005 MERCURY MOUNTAINEER
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
All four of my windows won't work. Replaced the switch in the driver side door and they still won't go down. Is there something else I can do?
Tuesday, August 20th, 2019 AT 6:53 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,300 POSTS
Welcome to 2CarPros.

The first thing we need to check is if there is a bad fuse. There are three I need you to check. See picture 1.

Here are a couple links you may find helpful:

https://www.2carpros.com/articles/how-a-car-fuse-works

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If they are good, you need to next check the window relay. See picture 1.

In this case, see if there is another relay with the same part number and switch them. If there isn't, here is a link that explains how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here are a few links you may find helpful when testing electrical components:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

There is a circuit breaker in the system, but lets start with what I listed.

Let me know what you find or if you have other questions.

Take care,
Joe

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Tuesday, August 20th, 2019 AT 8:10 PM

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