Just went out of warranty. I had work done at dealership today and feel I was a bit overcharged. What would a reasonable labor charge be to diagnose and repair a stuck open Map Thermostat? (Materials- New thermostat and coolant came in at $200.00.) Also, what is a reasonable labor charge to diagnose and correct / update a software error for the battery charger (fault 8040B9)? Any advise is appreciated.