Hello everybody, I hope you can help me again! After my Audi the heat exchanger has been changed in a workshop for approx. 750€ are basically always all my discs so extremely fogged that you can see nothing anymore and already form drops that run down on the disc! As soon as I press the AC button for the air conditioning the extreme humidity goes away on all the discs in the car, as soon as I deactivate the air conditioning, however, are immediately all Can the air conditioner break off if I activate it and still adjust the air to warm? What also struck me is that the REC no longer lights up red when pressing! One day later the AC button (air conditioning system) was no longer activated. Did the workshop make a mistake during the repair and can this error possibly cause the air conditioning to be broken now? Thank you and greeting Ben