Hi All,
I am having the same problem! I checked the coolant level and it was low. I filled it. It gets low again, in fact, I have to stay on top of it so the heat works. I am stumped as to where the coolant is going. I will look closer at the O.F. tank, hadn't thought of that!
My car is not throwing a code. My Mech. suggested that because the DEX cool is so corrosive that it can build up deposits in the switch and won't re-set. My low coolant light comes on and off all of the time. I hope it is not the LIM leaking.
He has suggested to change out the DEX cool for a universal coolant in the spring. It will be less problems for the system.
Thanks for the info.
Regards
Scott