Battery, 48 V -A6-, REMOVING AND INSTALLING, 5-SEATER: Installing

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Install in the reverse order of removal while noting the following:

-- Push the battery -3- until it stops against the retaining bracket -1- so that the battery clamping strip -2- engages into the retaining bracket.

• The battery must not be able to move at all anymore.

-- Attach the protective housing upper section -1-.

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• The battery retaining bracket -2- must rest on the battery clamping strip -3-.

-- Push the pressure vent tube -1- in until it engages audibly.

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-- When the ignition and electrical equipment are switched off, connect the battery in the following sequence:

-- Connect the connector -6-.

-- First connect the battery positive cable terminal clamp -3- to the battery positive terminal "+" by hand and tighten the nut -2-.

-- Connect the battery ground cable terminal clamp -4- to the battery negative terminal "-" by hand and tighten the nut -5-.

-- Attach the caps until they engage audibly.

-- Check the battery for secure fit after installation.

-- Disconnect the 12V battery from the ground cable. Refer to Battery -A-, DISCONNECTING AND CONNECTING .

-- Re-energize the 48V system. Refer to 48V SYSTEM, RE-ENERGIZING .

-- If the Battery, 48 V -A6- was replaced, the new Battery, 48 V -A6- must be adapted.

Procedure 

-- Connect the Vehicle Diagnostic Tester.

-- Select the Diagnostic  mode and start the diagnosis.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

• Body
• Electrical system
• 01 - OBD-capable systems
• 0021 - Battery Management 2 (A6, C31)
• 0021 - Battery management 2, functions
• 0021 - Control Module 48V (A6, C31) - Replacing

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.