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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Special tools and workshop equipment
required
Torque Wrench 1331 5-50Nm -VAG1331-
Torque Wrench 1331 Insert - Reversible Ratchet -VAG1331/1-
Piston Resetting Tool -T10145-
Note
If old brake pads are being replaced with new ones, then it is necessary to
check the brake rotor for wear.
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL)
in the instrument cluster > fig. 8
is part of the On-Board Diagnostic (OBD II) system.
The warning/indicator light illuminates when the ignition is switched on and
goes out after the engine starts and the idle has stabilize
