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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Transmitted information
Data collection
Applies to: vehicles with data collection
Depending on the country, Audi may collect data
for the following purposes, for example: offer
and product optimization, public safety, provision
of Audi connect remote vehicle services, and
adaptation to customer expectations. For example,
v
New tires or wheels
Audi recommends having all work
on tires or wheels performed by
an authorized Audi dealer or authorized
Audi Service Facility.
These facilities have the proper
knowledge and are equipped with
the required tools and replacement
parts.
New tires do not yet have the
optimal gripping properties.
Dr
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