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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Heated rear window (Bad earth?)



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      03-19-2018, 05:45 PM   #1
MrWani
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Drives: E92 330i
Join Date: Mar 2018
Location: Peterborough, UK

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Heated rear window (Bad earth?)

Hi guys, First real post so sorry if it's in the wrong place.

I purchased my 2011 E92 330i about a month ago from a mate with a known problem with the heated rear screen.

- Button on dash lights
- Replaced the IBS based on other forum posts
- Replaced the battery (At the stealers so hoping they registered it correctly)
- Checked the fuse (ok) and showing 12v when dash button pressed.
- Doesn't appear to be a replaceable relay on this model.
https://www.newtis.info/tisv2/a/en/e...indow/haeyxn6+
- Reads 12v on the actual bars.

Still I get no clearing of the rear screen. I also get an error code 'A6C8 Heated rear window relay' which I've cleared but keeps returning.

My assumption since I get 12v in the bars themselves that this must be the earth or a fault in the earth connection on the screen. Problem is I've no idea where to look to find the wiring.

Any help much appreciated.
Appreciate 0
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defogger, demister, e92, heated, rear window

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