Question about 1998 Mercedes-Benz C-Class

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C-180 Blowerfan has a mind of its own

Heating fan does not turn itself on.
After abt 15min driving and if switch is put on, blowerfan suddenly awakes. No probs with heat.
Suspect either fan engine replacement or resistor replacemant or
relay ? replacement.
Appreciate any advice on this.
Suspect repair must go in via front middle panel.

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Since you have electricity, and therefore the resistor is functioning...
Take out the rights side facia under the dashboard. (loosen 3 screws)
Push the two white clips apart to opn the fan box.
Open the box and check for dust and other particles, vacuum, and clean out the engine,
oil w-40 it (axle) a bit, Open the filter box shich perhaps have never been
changes, and then tap the fan engine with a small screw driver
and voila if you are lucky it will come to a rude awakeing...

Often the contacts and the engine just needs overhaul, ie TLC....

Posted on Feb 27, 2009


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