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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 Exterior Lights, Switches

HID Headlamp Usage and Safety Precautions Never replace bulbs if you are not familiar with the procedures, safety precautions and tools.   WARNING Danger to life due to high voltage. For work on the yellow high voltage symbol marked areas HID headlamp must be de-energized. Turn off the i

 Emergency call

Overview Applies to: vehicles with emergency call function An emergency call is a combination of data transmission and a phone call. The data transmission from your vehicle forwards important information, such as the vehicle and position data, to the emergency call center. Depending on the country

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