Even a small amount of contamination can lead to
malfunctions. Therefore, observe the following guidelines for
cleanliness when working on the A/C system:
Immediately seal the open lines and conne
The coolant circuit is bled according to specifications.
Refer to
→ Rep. Gr.19; Coolant System/Coolant; Coolant, Draining and
Filling
The engine is warm (the coolant temperature is h
Note
Depending on vehicle equipment, there are different versions
of the A/C system for the Audi Q7. Make sure to use the correct
version and pay attention to the allocation of different
Function of Air Quality Sensor -G238-
Note
There are different versions of the Air Quality Sensor
-G238-/ humidity sensor in Fresh Air Intake Duct -G657--A-.
Therefore, ensure the correct allocation. Refer to the Parts
Catalog.
Depending on the vehicle version, there are different fres