Power windows do not work

CINDY GARDNER

MEMBER
2004 MERCURY MOUNTAINEER
6 CYL
AUTOMATIC
140,000 MILES

All my windows quit working. Replace new master switch on drivers door, replaced fuse under hood has been checked hot and ground wires all working. No power getting to the control switch. Windows still not working had to get fuse from dealer.

Friday, April 24th, 2020 AT 8:16 AM

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

When you say you are not getting power to the control switch are you talking about the wire coming from the fuse box? If that is the case then there is a relay in between the fuse and the switch so we need to check the accessory delay relay and make sure that is okay. If it is and the fuse is okay then I suspect there is a wiring issue.

However, it is more likely to be the fuse or relay if you already replaced the switch.

Let me know what you find with this and we can go from there. Thanks

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Friday, April 24th, 2020 AT 8:44 AM

CINDY GARDNER

MEMBER
3 POSTS

Thank you.
We have checked all visible ground wires is there ground wire we cannot see is there one on driver side floor under panel that goes to door switch panel on side panel oh that's that's probably too much put all that it.

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Wednesday, April 29th, 2020 AT 2:33 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

You need to do some voltage checks. If all powers and grounds were checked, someone missed something

I want to start from scratch. At the accessory relay, with the key on there should be 2 powers. Verify voltage to the 2 terminals I circled.

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

Roy

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