electric window and sunroof problem m3
Moderator: martauto
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MONSPORT42
- E30 Zone Regular

- Posts: 506
- Joined: Mon Jan 10, 2005 11:00 pm
- Location: Portsmouth
Do they work with a door open, i.e. is it just the switches. If they are working with the doors open then it's likely to be an earthing problem. Happened for a while on my Sport especially in the wet. A member suggested cleaning/tightening the cables on the starter motor connection (disconnect battery first). They've worked perfectly ever since. Might help.

YOUR LEFT FOOT'S FOR BRAKING
there are 2 relays that control the electric windows.
they use 1 relay in normal use (ignition on) , and the other one when the doors are open & ignition is off.
so if they work when the ignition is off/door is open then you know it's the other relay.
pick a relay that you know is good (i.e. something like the horn one is easy to check) and swap em over. then you'll know for sure.
they use 1 relay in normal use (ignition on) , and the other one when the doors are open & ignition is off.
so if they work when the ignition is off/door is open then you know it's the other relay.
pick a relay that you know is good (i.e. something like the horn one is easy to check) and swap em over. then you'll know for sure.
this will come in handy for you i think!
http://www.e30zone.net/modules.php?name ... 0fuses.htm
http://www.e30zone.net/modules.php?name ... 0fuses.htm

- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
Fuse 17 is for the windows/roof with the ignition on. Fuse 28 is for the windows/roof with the doors open, ignition on or off. Both 30A.
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marley_uk1
- E30 Zone Newbie

- Posts: 115
- Joined: Sun Jan 14, 2007 11:00 pm
on my car the windows aint working but the sunroof is any ideas
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
If they boh stopped working at the same time, then probable culprit is the cut out switch. Either acting up, or a wire fallen off the back.marley_uk1 wrote:on my car the windows aint working but the sunroof is any ideas
This assumes the wiring is as BMW intended, and hasn't been "got at".
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marley_uk1
- E30 Zone Newbie

- Posts: 115
- Joined: Sun Jan 14, 2007 11:00 pm
where is the cutout switch

