Convertible Rear Window Blower

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M3KUK
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Post Wed Apr 12, 2017 10:05 pm

My blower isn't working, any tips?
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jimf
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Post Wed Apr 12, 2017 10:44 pm

1. Check fuse
2. Check wiring to switch *
2. put a 12v supply straigt to the blower plug see if it works.
3. Swap the switch

I'm not sure if there is a relay involved.
*My blower wasn't working, one of the wires to the button had obviously broken when I looked behind the switch.

Too be honest you are not missing much, they are next to useless anyway.
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paultv
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Post Thu Apr 13, 2017 7:18 am

Relay is attached to the fan/motor unit.

Paul :-)
4th May 1990 325i Convertible.

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Brianmoooore
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Post Thu Apr 13, 2017 10:30 am

jimf wrote:1. Check fuse
2. Check wiring to switch *
2. put a 12v supply straigt to the blower plug see if it works.
3. Swap the switch

I'm not sure if there is a relay involved.
Add the top position microswitch to the above. This is the one that stops the blower working when the roof is down.
Pull the relay, and link 30 to 87 of its base with a short piece of wire, with the ignition on, as a first check.
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M3KUK
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Post Sat Apr 22, 2017 9:31 pm

Had a look at this today, can hear a click from the relay when switch pressed, looks like motor is knackered.