Battery, 48 V -A6-, REMOVING AND INSTALLING, 0K4: Installing

Courtesy of AUDI OF AMERICA, LLC

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

-- It must be checked, if the foam ring -2- is placed over the grommet -1-.

-- Insert the battery -3-, at the same time insert the pressure equalization opening -arrow- into the grommet.

-- Check the pressure equalization opening -arrow- for correct seating in the grommet, for this, loosen the right underbody trim panel at the inside. Refer to OVERVIEW - UNDERBODY TRIM PANELS .

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

Courtesy of AUDI OF AMERICA, LLC

-- Connect the battery terminal connectors -1 and 3-.

-- Connect the connector -2-.

-- Check the battery for secure fit after installation.

-- Connect the Battery -A- and re-energize the 48V system. Refer to Battery -A-, DISCONNECT AND CONNECT, 0K4 .

-- 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:

• Diagnostic-capable systems
• 0021 - 48V Battery Management -A6-
• 0021 - 48V Battery Management, functions
• 0021 - Replacing Control Module (Battery, 48 V -A6-)

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