Re: mercedes c class 180 coupe komp se (C203) radiator fan stuck on
Andrew Young
Couple of points to check.Can you read live data of a/con pressure.?A faulty pressure switch can send the fan full speed.(located on pipe joint,bottom of condenser,above engine tray).Also check continuity of thin signal wire from fan speed controller back to front SAM ,fuse/relay box.Any accident damage n/s front.?This is often where the wiring loom gets mashed.
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