Audi Q3: A/C System, General Information
Audi Q3 (8U) 2011-2018 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant R134a Servicing / A/C System, General Information
- Introduction
- A/C Technology Basic Principles
- Refrigerant Oil
- A/C System and Refrigerant R134a Safety 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 s
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 - S
Refrigerant Oil
General Information
Caution
When handling refrigerant oil, pay attention to
local regulations.
Refrigerant oil mixes with the refrigerant (about 20-40%,
depending on compressor type a
SEE MORE:
Battery, Disconnecting and Connecting
Battery in Engine Compartment, Disconnecting and Connecting
Caution
Accident risk.
When working on pyrotechnic components (such as
airbags and belt tensioners), the battery must be
disconnected with the ignition switched on.
Disconnecting
- Turn off the ignition.
- Vehi
Rear Bumper Cover, Removing and Installing
Caution
If the vehicle has lane change assistance, the lane
change assistance control module -J769-/-J770- must be
recalibrated. Refer to
→ Electrical Equipment; Rep. Gr.96; Lane Change
Assistance; Lane Change Assistance, Calibrating.
Special tools and workshop e
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