Audi A4: A/C System, General Information
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / A/C System, General Information
- Introduction
- A/C Technology Basic Principles
- Refrigerant R134a
- Refrigerant R134a Characteristics
- Refrigerant Oil
- A/C System Operation
- General Safety Precautions
- A/C System and Refrigerant R134a Safety Precautions
- Refrigerant Circuit, General Precautions
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Introduction
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
A/C Technology Basic Principles
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
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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General, Technical data
Repair Information
General Repair Information
Using the Repair Manual
Refer to the "7-Speed DSG
Transmission 0CK" repair manual for all special procedures with
the transmission installed, depending on the model. The
servicing repair manual either does not describe them or
describes them only par
Head restraints
General information
Applies to: vehicles with adjustable head restraints
Fig. 61 Correctly-adjusted head restraint
Make sure that:
The upper edge of the head restraint is as even
as possible with the top of your head
The head restraint is as close as possible to the
back of the head
The head
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