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
General Description
The Knock Sensor 1 -G61- is a tuned accelerometer on the
engine which converts engine vibration to an electrical signal.
The Engine Control Module -J623- uses this signal to determine
the presence of engine knock and to retard spark timing, if
necessary.
Special tools and wor