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
Valve Guides, Checking
Special tools and workshop equipment
required
Dial Gauge Holder -VW387-
Dial Gauge - 0-10mm -VAS6079-
Procedure
Note
If the valve is replaced during repair, use the new valve
for measurement.
Due to different stem diameters, only use an intake valve in
the in
Special tools and workshop equipment
required
Hose Clamps - Up To 25 mm -3094-
Engine Bung Set -VAS6122-
Container of the Coolant Collection System -VAS5014- or the
Shop Crane - Drip Tray -VAS6208-
Hose Clip Pliers -VAS6362-
Caution
This procedure contains mandatory replaceable part