2005 Mercury Mountaineer

Engine Mechanical problem
2005 Mercury Mountaineer 4 cyl Automatic 100, 00 miles

my car had new ac compressor and a part relating to coolant, fixed last week. Since collecting the car the message center has fail safe mode flashing and car will not drive properly. When I press reset, it drives normally. The dvd/radio player now requires a code to use - which I do not have. Should my Ford dealer have code or is it same as one for keyless entry system, and should I take it back to fix as there may be somthing wrong. The mesg centre also tells me tyres extremely low when they are not - they are brand new. All this since taking it to fix AC. Please advise. Many thanks, Lynn
May 29, 2010.

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