Audi Q5: A/C System, General Information
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The purpose of this repair manual is to provide service
advisors and technicians with the basic knowledge needed to
ensure professional and competent procedures.
Note
Only the careful study
Physical Principles
The four known states of water also apply to air
conditioning system refrigerants.
1 - Gaseous (invisible)
2 - Vapor
3 - Liquid
4 - Solid
Refrigerant R134a Physical Data
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance which boils easily, designated as ref
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Note
There are different versions of the shut-off valve with
different functions and with different names. The following
illustrated Hybrid Battery Refrigerant Shut-Off Valve 1 -N516-
is for example installed on an Audi Q7 hybrid. Refer to
→ Heating, Ventilation and Air Condition
The engine coolant level can be checked with a
quick glance.
Fig. 200 Engine compartment cover on the coolant expansion
tank
Before you check anything in the engine compartment, always read and heed all
WARNINGS.
Park your vehicle on a level surface.
Turn off the ignition.
Read the engin
