SLK coolant light intermittently coming on

Jul 31, 2005
Hi everybody,

I have a 2001 SLK in which the yellow coolant warning lamp has started intermittently coming on recently.

Everytime, I have checked the coolant level after each journey and it has been fine. Had the car serviced recently and the guy thought it might be the screenwash bottle (which apparently also drives this warning). Filled it up, but the problem is still there from time to time.

Is it lightly to be the sensor itself?

Appreciate your thoughts.

Many thanks,


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