1986 300e and the electric rad cooling fan will not shut off. Seems like it must be a sensor. any ideas on where or which sensor??

Asked by Sep 25, 2013 at 07:15 PM about the 1986 Mercedes-Benz 300-Class 300E Sedan

Question type: Maintenance & Repair

1 Answer


If your engine isn't overheating then you have a faulty temperature sensor or an open circuit in the temp sensor wiring. There is a designated sensor just for the auxillary fan (electric fan) on this engine. It will be a two wire sensor. I believe there are three temp sensors one other one is for the gauge (probably a single wire), the other one I think is for climate control.

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