W204 Check coolant Warning light

[kap02]

As the subject suggest, my car is showing check coolant each time i start the car.

Its a 2010 C250cdi, I have checked the coolant and all seems fine. The temp also sits at a normal 85 Degrees too.

Any ideas?

 

[misfire84]

yes look at the screen wash level sensor ( yes ! screen wash sensor ) the two sensors use the same sensor wire and work on diffrent levels of restance and if one of the sensors goes down it triggers the other sensor alarm ....

 

[kap02]

ODD! but i will fill it up.

 

[misfire84]

no I ment if the sensor fails

 

[kap02]

Topped up both... seems to have gone off. Maybe the coolant was actually low lol.

 

[elite_504]

As misfire says, they are wired in series. Make and break the connector too. a little corrosion in there can increase the resitance enoughto trigger the light.