Just acquired a 2003 TT Coupe for my daughter. Hd it 2 days; it's now showing a Check Engine light Took it to Autozone to get scanned, they tell me the code is P2181 and that it means low coolant.
According to
Also - there's a constant hum from near the cooling fan - looks like a small inline pump in the coolant line. It doesn't seem to shut off - was running nearly an hour after we returned from the store.
What's happening here?