Audi A4: Refrigerant Circuit
Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit
- A/C System Repair Information
- Using Service Station
- Refrigerant Circuit, Flushing with Compressed Air and Nitrogen
- Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a
- Refrigerant Circuit, Determining Leaks
READ NEXT:
A/C System Repair Information
Air conditioning systems designed for refrigerant R12 are
only to be filled with refrigerant R134a if certain requirements
are fulfilled. Refer to
→ Chapter "Refrigerant Circuit, Convertin
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
SEE MORE:
Component Location Overview - Infotainment System
1 - Bracket
2 - Information Electronics Control Module 1 -J794-
Connector assignment. Refer to
→ Wiring diagrams, Troubleshooting & Component locations.
Removing and installing. Refer to
→ Chapter "Information Electronics Control Module 1 -J794-, Removing
Hydraulic Pressure Sensor 1 -G545- and Hydraulic Pressure Sensor 2 -G546-,
Removing and Installing
Note
The Mechatronic remains installed.
WARNING
The system is under pressure.
The electronic ATF pump must be deactivated every
time before opening the transmission, and the hydraulic
pressure reservoir is drained.
Refer to
→ Chapter "ATF Pump, Deactivating and Draining
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