engine coolant light always on, normal running temp on gauge and fluids ok on 1992 Mercedes-Benz 300E

Is it a faulty sensor?

by in San Diego, CA on January 11, 2011
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2 answers 1 comment
ANSWER by , January 11, 2011
Probably the coolant level sensor. Located in the expansion tank. A new sensor is around $30.00 and not too hard to change. If you simply unplug the sensor the light should go out. Otherwise there may be a short to ground further up the wire harness.
COMMENT by , January 11, 2011
You were spot on as well as Answer #2. Thanks again from Enthusiast in San Diego..
ANSWER by , January 11, 2011
it can be the sensor in your cooling tank that is not reading right.