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
Trim Removal Wedge -3409-
Removing
- Pry the instrument panel side cover
-1- off using the Trim Removal Wedge -3409--arrow-
and remove it.
Installing
- Press the instrument panel side cover on until it engages
audibly.
Instrument Panel
The Microphone Unit In Front Roof Module -R164- in installed
in the Front Interior Lamp -W1-. Depending on the equipment,
there are up to three microphones installed.
One microphone (Interior Microphone -R74-) is connected
directly to the Digital Sound System Control Module -J525-. The
other mic
