My wife owns an 02 SER with 52,000km. She bought it brand new and hasn't had any problems yet. The other day I could smell a stong odor of coolant just after she parked it in the garage. I checked all hoses, around the engine, and rad but observe no leaks. I checked the coolant level and everything appears Ok. The temp guage seems fine. Should I be concerned? I know these engines run pretty hot, could this be the case?