When the AC is on the rear vents will blow conditioned cold air for approximately 40 minutes. Then the air to the rear vents turns ff and begins to blow warn to hot air. I took it to a dealer and I was told there is no automatic vent control to the rear vents, only a duct that runs from the front of the passengr to the rear vents and it may be deteriorated. If the duct is deteriorated then how could it blow air at all? I'm not an automotive expert, but I believe that some damper in the system control is operating to allow the AC air to flow and somehow reverting to warm air. Otherwise the AC works great. Thanks for the input!
Thursday, May 17th, 2012 AT 11:31 PM