Audi A4 Owners & Service Manuals

Audi A4: Infotainment system

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 Telephone

 Introduction

Applies to: vehicles with telephone You can operate various telephone functions easily through the MMI in your vehicle. Depending on the country and the vehicle equipment, the following options may b

 Using the Audi phone box

General information Applies to: vehicles with Audi phone box Fig. 135 Front center console: Audi phone box with connections Depending on vehicle equipment, you may be able to use the following functi

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 Radio Installation Instructions

Retrofitting Radio Systems General Information Before installing radios and telephone systems (radio systems), disconnect the negative terminal of the Battery -A-. Refer to →Electrical Equipment; Rep. Gr.27. Use the applicable wiring diagrams. Refer to → Wiring diagrams, Troubleshoo

 Finding Leaks via Vacuum Test using A/C Service Station or Nitrogen Pressure Testing

Vehicles with a High Voltage System (Hybrid Vehicles) Read and follow all of the supplemental warnings for all work performed on vehicles with the high voltage system. Refer to → Chapter "Warnings when Working on Vehicles with High Voltage System" and → Electrical Equipment; 

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