Low coolant warning when parked coolant full

[hwdtrucking]

(06-10-2016 )gearhead Wrote:  Pull the sensor out of the tank when it says low coolant, then take a magnet to the side of the tip and if the lamp goes out it's a problem with the float in the tank if not bad sensor or in the wiring. Just a fast way to check those sensors before you just go buy one.

If this is a float type sensor, maybe I need to check my antifreeze content in the reservoir. If it is too much water, then the float won't work correctly. ..