Hey
Its a simple fix....
The dealer needs to update the CCM computers software... CCM= Central conveniance module.
It controls windows, central locking and has issues... The software is German but the parts are American and they clash with each other.
The dealer will have the car for an hour and it will cost you nothing. They will update the software and thats it.
If you have the highline computer then you just need to set everything up again (or ask them to do it).. For example you will need to switch on the auto close feature, child safety feature... If you dont have the highline comp then insist they set it up using VAG Com.
I hope this helps.
Mike