Climate control vent noise

Lionel Hutz · 01-07-2010, 11:06 AM

My car has developed a weird climate control quirk. With the heater on auto, the system will stop completely for a split second. It sounds like either the vents are closed or the fan is turned off. It then starts up again like normal. I don't think it's just transitioning between modes (e.g. defogging and normal heat) because all the vents sound like they shut down. It will do this anywhere from zero times during a drive, to three times in five minutes. Anybody else have this?

rori zahr · 01-08-2010, 02:09 AM

with AUTO turned on, I can hear the AC ventilation valves opening and closing some time during a typical ride, but this should happen only when the circulation button is set to auto.

01-07-2010, 11:06 AM	#1
Lionel Hutz Lieutenant 229 Rep 509 Posts Drives: '24 X5 50e Join Date: Apr 2009 Location: SoCal iTrader: (0)	Climate control vent noise My car has developed a weird climate control quirk. With the heater on auto, the system will stop completely for a split second. It sounds like either the vents are closed or the fan is turned off. It then starts up again like normal. I don't think it's just transitioning between modes (e.g. defogging and normal heat) because all the vents sound like they shut down. It will do this anywhere from zero times during a drive, to three times in five minutes. Anybody else have this?
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01-08-2010, 02:09 AM	#2
rori zahr AristoCat 40 Rep 676 Posts Drives: M2 Join Date: Jan 2009 Location: Beirut iTrader: (0)	with AUTO turned on, I can hear the AC ventilation valves opening and closing some time during a typical ride, but this should happen only when the circulation button is set to auto. __________________ AristoCat
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