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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 Instrument cluster overview

Fig. 2 Instrument cluster overview (Audi virtual cockpit) Fig. 3 Instrument cluster overview (analog) Depending on the vehicle equipment, the following items may appear in the instrument cluster: Left dial Tachometer Tab area Central area Status line (one or two lines) Right dial Co

 Immobilizer

General Information The anti-theft immobilizer system control module can depending on the vehicle be integrated in the following systems: Instrument Cluster Control Module -J285- Comfort System Central Control Module -J393- Access/Start Authorization Control Module -J518- Additionally dependin

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