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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 09-08-2003, 12:10 PM
Ben Carufel Ben Carufel is offline
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Ron et al: Instrument light dimmer shorting out?

Ron, I know you've got a bunch of experience with the electrical systems of these cars, so I thought I'd ask you...

The headlight switch/interior light dimmer (rheostat?) in my M Coupe is shorting out, I believe. When I turn it all the way to the right, i.e. 100% brightness, all of the instrument lights go out. If I turn it a hair back to the left, they come back on...

Any ideas what it could be? My only guess is that the rheostat is shot.

Thanks!
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2000 BMW 528iT - 1989 BMW 325i S50 - 2007 BMW R1200S - 2002 BMW R1150GS ADV - 1972 BMW R60/5
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  #2  
Old 09-08-2003, 12:27 PM
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Ron Stygar Ron Stygar is offline
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Quote:
Originally Posted by Ben Carufel
Ron, I know you've got a bunch of experience with the electrical systems of these cars, so I thought I'd ask you...

The headlight switch/interior light dimmer (rheostat?) in my M Coupe is shorting out, I believe. When I turn it all the way to the right, i.e. 100% brightness, all of the instrument lights go out. If I turn it a hair back to the left, they come back on...

Any ideas what it could be? My only guess is that the rheostat is shot.

Thanks!
Probably opening up. Rheostat is part of the headlight switch.

http://www.unofficialbmw.com/e36/ele...ht_switch.html
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  #3  
Old 09-08-2003, 12:33 PM
Ben Carufel Ben Carufel is offline
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Thanks Ron. It couldn't just be a simple few screws, could it?

Is it enough of a time consumer/special tool require-er that I should just take it to the stealer and pay to have it done CPO?
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2000 BMW 528iT - 1989 BMW 325i S50 - 2007 BMW R1200S - 2002 BMW R1150GS ADV - 1972 BMW R60/5
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  #4  
Old 09-08-2003, 07:49 PM
Ben Carufel Ben Carufel is offline
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After more research it seems like something to let them do CPO.
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