Audi A4: A/C System, General Information
Audi A4 (B9) 2016-2024 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
SEE MORE:
Front Seats
Component Location Overview - Electric and Electronic Components
1 - Memory Seat/Steering Column Adjustment Control Module
Memory Seat/Steering Column Adjustment Control Module -J136-
Front Passenger Memory Seat Control Module -J521-
Equipped on some models: Integrated seat ventilat
Repair Kit for FlexRay Wires with Coating
Note
The repair of FlexRay wires with coating can only take place
using FlexRay wires with coating from the Parts Catalog.
Observe general notes for repairs on the vehicle electrical
system. Refer to
→ Chapter "Vehicle Electrical System, General Repair
Information".
A two-laye
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