coolant leak

[NewArt]

The relief valve that you use to burp the system can sometimes get tired. There are o-rings under it that might be worn and I had one that actually split in half at the track with the coolant pouring out of the overflow hose causing a spin! End of my event, obviously.

[Aanic]

I just went through this very same issue. A shop had recently replaced the relief valve on the tank and neglected to remove the original o-ring. So I had two o-rings in place and both were mangled due to them trying to tighten everything down.

Pelican hooked me up with o-ring dimensions (47x4) and Pep Boys hooked me up with free o-rings. 5 minute job to replace it, but be careful tightening down those screws into the plastic housing.

Got the low coolant level light for a few days even after topping off, but I had lost nearly a gallon of coolant and figured I had air in the system.

[pomerlo]

Could also be the tank cap. It happened to me. Replaced the cap and the problem is now solved.

If the part number on the blue cap end with a "-01" then this is your number one suspect. It must end with the revised part number: "-04"