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Question

mercedes c270 51 plate cooling fans always on with/without ignition

Submitted: 330 days and 9 hours ago.
Category: UK Car
Value: $18
Status: AWAITING CUSTOMER ACTION

Answer

Hi there

Common failure on the Mercedes is the cooling fan control module, which sits on the radiaitor shroud. You will need to need to test both the engine cooloing temperature sensors also.

You should have an associated fault code stored. You will need a Star diagnostic scan tool or similar to test the module and the sensors. Try removing the wiring harness from the module and reconnect after 5 minutes.

Have you have the fault codes read yet?

Regards
Martin

Picture
Expert: AAboy
Pos. Feedback: 100.0 %
Accepts: 224
Answered: 3/16/2009

Master Technician

HND Mechanical Engineering

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