Is it a faulty sensor?
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1992 Mercedes-Benz 300E Question: engine coolant light always on, normal running temp on gauge and fluids ok
Answer #1verdigo from SCE Small Car Enterprises, January 11, 2011, 15:22Enthusiast
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.
ReplyVisitor, January 11, 2011, 18:23
You were spot on as well as Answer #2. Thanks again from Enthusiast in San Diego..
Answer #2AutoMedic from Bradenton Auto Center, January 11, 2011, 16:00Technician
it can be the sensor in your cooling tank that is not reading right.