auto a/c keeps turning off

andrewj7 · 01-13-2011, 11:52 PM

Over the last few days the auto mode on my A/C is turning off. I'm driving along and it's working just fine. Then the fans start blasting away and the auto light has gone out. It only seems to have happened since the temp dropped to around 40F in the bay area.

Anyone know why this would happen?

santov · 06-09-2011, 06:22 PM

My auto mode just turned off twice on me. Can anybody help?

I'm going to see if there's any diag info with DIS later.

wildag · 06-11-2011, 07:00 AM

This happened to my z4m a while back. The problem was that the passenger footwell air duct flapper motor was going out. A/C control unit found that it was unable to perform it's function, so it went into "safe mode", where it blows heat full blast.

A dealer can read the codes off the A/C controller to determine why it's happening.

01-13-2011, 11:52 PM	#1
andrewj7 Private 7 Rep 66 Posts Drives: Z4 Coupe (#40) w/Nav,Sprt,Prem Join Date: Dec 2008 Location: Los Altos Hills, CA iTrader: (0)	auto a/c keeps turning off Over the last few days the auto mode on my A/C is turning off. I'm driving along and it's working just fine. Then the fans start blasting away and the auto light has gone out. It only seems to have happened since the temp dropped to around 40F in the bay area. Anyone know why this would happen? __________________ 2006 Z4 Coupe, Silver Grey, Sports Package, Premium Package, Navigation System, Intravee II + Alpine KCA-420i, Heated Seats, Xenon Headlights
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06-09-2011, 06:22 PM	#2
santov Lieutenant 64 Rep 483 Posts Drives: 2007 Z4 3.0si White over Beige Join Date: Dec 2010 Location: Bay Area, Calif iTrader: (8)	My auto mode just turned off twice on me. Can anybody help? I'm going to see if there's any diag info with DIS later.
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06-11-2011, 07:00 AM	#3
wildag ///M'n it Up 17 Rep 344 Posts Drives: '06 ///M Roadster Join Date: Aug 2009 Location: Reston, VA iTrader: (0)	This happened to my z4m a while back. The problem was that the passenger footwell air duct flapper motor was going out. A/C control unit found that it was unable to perform it's function, so it went into "safe mode", where it blows heat full blast. A dealer can read the codes off the A/C controller to determine why it's happening.
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