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E36is 03-03-2010 08:08 AM

OBC temp readout
OBC temp readout is reading 'Temp: -37 C'. no matter the actual ambient outside temp is. Is this a bad sensor or is it the OBC? Every other functions on the OBC seem to be working fine. If its the sensor where is it located? thanks.

ScotcH 03-03-2010 10:14 AM

It's the sensor ... probably ripped out. It's a circle plug about 1.5" in diameter in your brake duct (I think the passanger, but can't remember).

Mad Cow 03-03-2010 12:56 PM

Mine does that too, turns out both brake ducts were ripped out, taking the OBC temp sensor and plug with it. Mine was in the driver's side brake duct. There's also another one in the passenger side to turn on the heated washer nozzles if you have them.

328IScreamer 03-03-2010 01:33 PM

This is very very common on e36s
I have an extra temp sensor if anyone is interested....$20 and i'll ship it to your door

sparkybp 05-10-2010 12:15 AM

So the other sensor in the other brake duct is for heated windshield or headlight washers? and what values is it based on it doesnt look like a temperature probe, more so a induction sensor almost.

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