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
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Steering Column, Checking for Damage
Visual Check
Components of the steering column must not show any
indications of damage.
Function Test
The steering column must turn without catching or difficulty
of movement.
The steering column must adjust easily from side to side and
vertically (this test is only possible when installed)
Playing media
Media sources
The following sources can be selected depending
on the vehicle equipment:
Alexa
USB device
Connect external device: you can connect external
devices via Bluetooth and use the Bluetooth
audio player, or you can connect
an external device directly to the Audi music
interface
Str
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