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:
Restraint System Pyrotechnic, Electric and Mechanical Components,
Replacing After a Collision
Special tools and workshop equipment required
Vehicle Diagnostic Tester
The airbag control module must be replaced
If the display "Control module faulty" appears after checking
the DTC memory
After three side/ driver/ front passenger airbag or belt
tensioner deployments
If housing is damage
Engine oil
If the engine oil level too low
If you need to add engine oil, use an oil that is listed on the sticker. The
sticker is located at the front of the engine compartment fig. 158. When using
the engine oil listed on the sticker, you can adjust the oil level as often as
needed.
If engine oil that mee
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