Audi A4 Owners & Service Manuals

Audi A4: Electrical Equipment General Information

Audi A4 (B9) 2016-2025 Service Manual / Electrical System / Electrical Equipment General Information

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 Battery, Starter, Generator, Cruise Control

 Battery

Battery General Information To guarantee a long service life, the Battery -A- must be checked, serviced and maintained as described in this manual. The Battery -A- supplies the power to start the eng

 Test Sequence

Battery, Checking, Vehicles with Battery Monitoring Control Module J367 or Energy Management Control Module J644 and Data Bus On Board Diagnostic Interface J533 In certain model series the followi

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 Introduction

Depending on the vehicle equipment, various parking aids will help you when parking and maneuvering. Parking aid The parking aid plus assists you while parking using audio and visual signals to warn you about objects detected in front of, behind, and next to* the vehicle. The rearview camera shows

 Refrigerant R134a Characteristics

Commercial Names and Designations Refrigerant R134a is currently available under the following trade names: H-FKW 134a SUVA 134a KLEA 134a   Note Different trade names may be used in other countries. Of the wide range of refrigerants available, this is the only one which may be used

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