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Kevin, Master tech
Category: Mercedes
Satisfied Customers: 2171
Experience:  Diagnostic technician
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The radiator cooling fan on my 200 constantly running even

Customer Question

The radiator cooling fan on my B 200 constantly running even the engine is cold. What can be a problem?
Submitted: 12 months ago.
Category: Mercedes
Expert:  Kevin replied 12 months ago.

Hi im kevin the most likely cause is the coolant temp sensor giving a bad reading causing the car the protect itself by running fan continously to prevent overheating .replaceng temp sensor will cure in most cases