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Old 03-05-2004, 09:02 AM
Registered User
Join Date: Aug 2003
Posts: 21
Intermittent Climate Control

Hello all,
I have recently had a problem with my climate control, mainly the fan speed selector. If I shut my car off with the climate control on then the next time I restart it the fan speed control no longer turns the fan on. Warm air will still blow through the vents but the fan can not be adjusted. I was suggested that it may be a realy but I've not found anything wrong otherwise.

Any suggestions?
Chris - '86 w201 16v Ronal Wheels, 5speed, Sony headunit, K&N, Nology Wires
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Old 03-05-2004, 09:57 AM
Registered User
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
Check the CC fuse in the fusebox -- they get corroded and work intermittantly. Ditto for the fan fuse (it's separate, I believe, 25A). That is just about the limit for a fuse there, and if it is a plastic one, it will melt and only contact part of the time. Replace any plastic fuses with ceramic ones.

There is also a fuse inside the CC on the 190 -- it can also be intermittant. If there is no power to the CC, it will default to defrost and full heat....

1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
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Old 03-06-2004, 04:35 PM
Registered User
Join Date: Aug 2003
Posts: 21
Just got finished switching out the blower speed selector with a new one I got from potomac german auto ( Worked like a charm! Thanks for the suggestions though, I checked out all the fuses first.
Chris - '86 w201 16v Ronal Wheels, 5speed, Sony headunit, K&N, Nology Wires
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