Audi A4 Owners & Service Manuals

Audi A4: Refrigerant Circuit

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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

 Using Service Station

 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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 Transmission Tightening Specifications

  Note The tightening specifications apply only to lightly greased, oiled, phosphated or blackened nuts and bolts. Additional lubricants, such as engine oil or transmission fluid are permitted, but lubricants containing graphite are not. Do not use any ungreased parts. Tightening specif

 Checking Pressures on Vehicles with Expansion Valve and Receiver/Dryer (with Internally Regulated Compressor)

General Information   Note Connect the A/C service station. Refer to → Chapter "A/C Service Station, Connecting". Observe the test requirements. Refer to → Chapter "Pressures, Checking". - With the ignition switched off, check the pressure in the refrigerant circuit (u

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