Well, I don't have the CEL on.. just the EPC. I think next time when it happens, I will just drive it straight to the dealer, I don't get the point of towing it in since they're not going to leave the car running on the tow bed, and if the light goes off again, what are they gonna do? send me back home since they can't diagnose it without the light on? I just found it funny that the event is not logged according to the dealer...