Audi A4 Owners & Service Manuals

Audi A4: Refrigerant Circuit Components, Replacing

Audi A4 (B9) 2016-2026 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit Components, Replacing

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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

 Leaking or Damaged Components except A/C Compressor, Reservoir or Receiver/Dryer

The refrigerant circuit was completely empty (for example with larger leak or cracked hose)   Note In the event of only a minor leak with slow escape of refrigerant (e.g. at a small leakage

 Compressor, Replacing without the Need for Flushing Refrigerant Circuit

  Note Cleaning the refrigerant circuit means flushing with refrigerant R134a. Refer to → Chapter "Refrigerant Circuit, Cleaning (Flushing), with Refrigerant R134a". If a faulty A/C

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 Control Module/Digital Sound System Amplifier, Removing and Installing

Special tools and workshop equipment required Fiber-Optic Repair Set - Connector Protective Caps -VAS6223/9-. The Digital Sound System Control Module -J525--1- is located behind the left luggage compartment side trim panel.   Note If replacing the control module, select the "Replace contr

 Adjusting adaptive cruise control

Applies to: vehicles with Audi adaptive cruise control You can adjust the system individually. The settings depend on the vehicle equipment. Applies to: MMI: Select on the home screen: VEHICLE > Driver assistance > Audi adaptive cruise control. Possible settings: Applies to: vehicles with

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