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Window winder relay - hot, hot, hot
Hey all,
Been sorting through the various issues in this car, while going over the CE panel I noticed that the window winder relay was very hot, too hot to touch bare handed. Here are my thoughts; heat = excess load or resistance, but it heats up without the window motors even being activated. So excess resistance leaves me with a bad relay? It seems like the heat is mainly in the 30 prong and the large grey resistor above the coil. I'm assuming its probably a bad relay but welcome input. Should I test the draw at the motors before replacing the relay? 1989 - 928 S4 Last edited by Towers; 08-05-2014 at 01:32 PM.. |
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08-05-2014, 11:52 AM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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What do the relay plug contacts look like?
Testing for a short or something sounds smart. If a new relay heats up, pull it until sorted. |
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08-05-2014, 02:03 PM
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Registered User
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Prong 86 had some white fouling and light pitting on it, I sanded and cleaned it but no change. Inside the relay looks pretty clean, but had the smell of baked electrical components.
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1989 - 928 S4 |
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08-05-2014, 02:42 PM
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Registered
Join Date: Jun 2001
Location: Baltimore Md, USA
Posts: 347
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was this ever sorted? if so what was the fix?
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05-18-2016, 08:26 AM
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Petie3rd
Join Date: Jul 2000
Location: Philly PA
Posts: 4,528
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put deoxit 100 into the CE panel connectors the relay has a bad connection thus the hi resistance and heat
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^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats |
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05-19-2016, 04:47 AM
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