Maxxfan odd operation

cmarkj wrote:
I have a Maxxfan in my 2014 TT (don't know the model #). It is power open/close with a rain sensor. Last season it started to open and close about 10 times before finally staying open when I turned it on.

Never understood the need for a rain sensor when every vent should have a vent cover over it anyway. If you suspect the rain sensor in yours is the cause of your issue I'd be inclined to see if it can't be permanently disconnected.