A4 V6-3.0L (AVK) (2004)
Battery: Service and Repair
Emergency Battery, Switching Off/On
Emergency Battery, Switching Off/On
In order to avoid unnecessary discharge of the emergency (back-up) battery, it must always be switched off prior to disconnecting the vehicle battery,
and switched back on after the vehicle battery is reconnected.
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Use VAS 5051 Vehicle Diagnosis, Testing and Information System in mode: "Guided Fault Finding"
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Enter appropriate model, equipment and model year information and press ">" to confirm.
After all control modules have been registered and DTC memories checked,
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Press "Go to"
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elect "Function/Component Selection"
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Select "Body"
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Select "Electrical Equipment"
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Select "01 - On Board Diagnostic (OBD) systems"
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Select "Telematic"
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Select "Functions -Telematic"
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Select "J526 - Telephone/Telematic Ctrl. Module, service mode disc. battery"
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If necessary, press ">" to advance
Switch off emergency battery
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Select/press button 3 - "Service mode activating (no load on emergency battery)"
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Follow the tester's prompts.
Switch on emergency battery
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Select/press button 1 - "Service mode deactivating (normal operating condition)"
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Follow the tester's prompts.