E38 hot air from demister

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Moderator: martauto

Blitz
Married to the E30 Zone
Married to the E30 Zone
Posts: 11155
Joined: Mon Jan 30, 2006 11:00 pm
Location: East London+Basildon

Post Fri Jun 24, 2011 12:40 pm

I got this weird problem with a E38 where hot air constantly comes front the windscreen demister which cant be stopped.

Anyone familiar with this problem?

EDIT: Sorted kind of. Only does it with auto enabled on the climate control. But does not with the face setting enabled, good enough for me.
MJJ_ZX6RR
E30 Zone Regular
E30 Zone Regular
Posts: 660
Joined: Mon Nov 10, 2008 11:00 pm
Location: Wiltshire, UK

Post Fri Jun 24, 2011 1:38 pm

On my E32, that is normally a sign that the underbonnet heater valve has siezed open. There is two valves in a single valve body, one for driver, one for passenger side.

You would have heat pouring out of the footwell vent on that side though too, regardless of where the climate control temperature is set.

Martin.
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Lots of bikes, the odd modern BMW, and now an 88 e30 335i Cab project with E32 running gear