Clicking Noise in Vent Control System - 2006 QX56

[rickamorgos]

I'm trying to trouble shoot an anoying clicking noise in the front dash. Upon every startup, a loud, regular frequency clicking noise occurs for about 10 seconds within the front dash. This same noise occures after a minute or so upon turning the truck off.

I have been able to duplicate the noise when the truck is running every time I turn on the front facing interior climate control air vents on using the Mode button. This noise does not occour when the front facing vents are shut off or closed - this only occurs when the vents are commanded to open.

I suspect the air valve or baffle is defective or there is something interferring with it.

Has anyone else experieced this issue? Any advice regarding how to eliminate the issue?

By the way, the rear AC system does the same thing every time I switch control to the rear - from the front control. The sound comes from the rear passenger side of the truck.

Thanks in advance!

 

[MikeTest]

Not sure of the cause but am interested in solution. Have same issue on a 2004.

 

[njphats]

Clicking Noise in HVAC...2005 QX56

I have the same problem. The noise are the vents that open and close behind the center dash. I getting rid of my '05 Q before it gets worse.....and it will get worse.