Low coolant light on but the coolant level is fine, this may be the fix.
Most vehicle have a coolant level sensor to alert you if your coolant is low. But sometimes the low coolant light may come on even though your coolant level it full.
This can be caused by a contaminated sensor. If your coolant has
become contaminated with engine oil from a head gasket failure or transmission fluid from a ruptured transmission cooler in your radiator, that oil can cause problems with the coolant level sensor.
Remove the coolant level sensor from the coolant reservoir and check for metal sensing elements for signs of contamination.
Clean the sensor tips with brake cleaner or even emery cloth and then reinstall. That fixes the problem for most vehicles.
© 2012 Rick Muscoplat
Posted on by Rick Muscoplat