1999 Audi A4 Quatro Climate Control
 

Hello everyone,

I have a 1999 Audi A4 Quatro, 1.8 turbo 5-speed.
My climate control seems very confused. The outdoor tempeture is all over the place and in the hot summer months reads below zero which causes the car to blow heat most of the time. On the other hand in the winter months there are times when it only throws air-conditioning. Any suggestions what might be causing this?