Constant coolant low message

[UtahTiger]

Hey all,

I had a crack in my 2012 x5’s expansion tank. I Ordered a new expansion tank and cap and replaced the broken one with the new one. So fill up the tank, and bleed the system and everything is good for about a week or so. Well now I’m getting a perpetual “coolant level low” light when I start the car but the tank is full. If I drive to work (~25 min) and turn the car off and then on, the light is gone for the rest of the day.

I replaced the coolant level sensor this AM and I am still getting the same message. Any advice/suggestions? In the expansion tank, there is the min/max level that seems rigid and in place. Should that level be able to move or is the intended design for it to remain in place?

[racermp]

Did you try to rebleed the system?

[UtahTiger]

So bled the system, made sure that the tank had enough coolant, reinstalled the coolant level sensor and the light was still on..

[racermp]

Maybe a break in the coolant wire. If you have a volt meter, maybe check the resistnace in the wire

[UtahTiger]

I cleaned the connectors this afternoon and still getting the error message. Has to be electrical at this point... got an appointment at 8am to look at it