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
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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:
Engine Control Module
Overview - Engine Control Module
1 - Bolt
9 Nm
2 - Mount
For the Engine Control Module -J623-
3 - Engine Control Module -J623-
Before replacing perform the "01 - mechanical engine, functions"
listed adaptation using the Vehicle Diagnostic Tester.
Removing and
Emergency Module Antenna, Removing and Installing
Emergency Module Antenna -R263-, Removing and Installing, Vehicles
without Tinted Glass
The Emergency Module Antenna -R263- is located in the front
center instrument panel (only IW3)
Removing
- Turn off the ignition and all electrical equipment and
remove the ignition key.
- Remove the
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