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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Overview - Bulkhead
1 - Seal
Install the seal from underneath.
2 - Lock Washer
When installing, simply press the plenum chamber bulkhead onto the
threaded pins.
3 - Nut
4 Nm
4 - Bolt
7 Nm
5 - Plenum Chamber Bulkhead
High-Voltage System
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it protects
the engine from freezing in the winter.
The cooling system is sealed and generally requires
little attention.
The cooling system has been filled at the factory
with a permanent coolant which does
