Fluid Level Sensor - 17137524812 (Coolant, Washer and/or PS Fluid)

This fluid level sensor is used on a variety of BMW models, and depending on the model may be found as either the coolant level sensor (mounted to the expansion tank), the washer fluid level sensor (mounted to the windshield washer bottle), the headlight washer fluid sensor (for cars with headlight washing systems,) or occasionally the power steering fluid level sensor (mounted to the power steering reservoir.)

This is most often found as a coolant or washer fluid sensor. Be sure to examine your fluid level sensor to make sure yours matches this number.

What are the signs my fluid/coolant level sensor is bad? If your BMW is getting "low coolant" (or low washer fluid) warnings, but you have plenty of fluid in the tank, this is a sign of a bad fluid/coolant level sensor. The fix is a new sensor (also known as a sending unit.) The new unit will tell the computer your fluid level is in fact correct, fixing your low coolant warning or low winshield washer fluid warning.