I have to make a recommendation for this vehicle. These cars have a very complex climate control system which includes four pages of wiring schematics. Based on what you have described, I suspect that a fault has occurred in the control module. However, that is a potentially expensive guess. To make things even more difficult, parts such as the climate control module requires what is called coding. A specific code needs entered on the vehicle specific to the vehicle for it to work properly. This basically prevents the desire of theft and deems used parts basically useless.
Now that I said that, you really should have the computer scanned using VAG software to determine exactly what is causing the issue. Without doing this, it becomes a guessing game which can become very expensive and not helpful.
Please let me know if this helps. If you have other questions, let me know.
Tuesday, November 5th, 2019 AT 11:27 AM