Ok I have bleeded the hoses and the coolant is always full still, Is all that is left to replace that $40 sensor? I just want to make sure before I go buy it. Any help appreciated!

 

That was my problem, it was the level sensor. Mine stayed on, but dimly lit.

You can try removing it and cleaning it......I did that and it worked for a short while, then I just bought the sensor. I think I only paid about $23 for it, so you may have a dealer trying to get too much from you there at $40.

Good luck!