Audi A4: Using Service Station
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit / Using Service Station
- General Information
- Service Station, Important Usage Information
- Refrigerant Circuit, Discharging with Service Station
- Refrigerant Circuit, Charging with Service Station
- A/C System, Operating after Charging
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General Information
Vehicles with a high-voltage system (hybrid vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- I
Service Station, Important Usage Information
Observe the following with regard to service station
operation. Refer to the Parts Catalog (Tools; Special Tools and
Equipment: A/C and Heating).
- The filters and dryers installed must be repl
Refrigerant Circuit, Discharging with Service Station
Work procedure may vary depending on the type of tools
selected (the tool-specific operating instructions should
therefore be followed).
The refrigerant circuit is to be discharged if parts of th
SEE MORE:
Sliding/tilting sunroof
Operation
Applies to: vehicles with sliding/tilting sunroof
Fig. 40 Section of front headliner: sliding/tilting sunroof
button
The sunshade can be opened and closed manually
in any position when the roof is closed. The
sunshade opens automatically when the roof is
opened.
Tilting and closing the ro
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
When water is heated in a container (heat absorption), water
vapor can be seen to rise. If the vapo
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