Audi A8 (4E) Battery Replacement

This procedure details how to replace a battery in a vehicle using a separate battery management control module. See the separate instructions for models where the battery management control module is a slave/subsystem of the gateway.

The following procedure does assume you are using a battery supplied by VW/Audi, all necessary details for the following steps can found on the battery itself. Make sure to refer to the factory repair manual in order to fulfill all additional prerequisites.

[Select]
[61 - Battery Regulation]
[Coding - 07]
Use the pull down menu to select the battery (slave) listed as #1.
[Battery Coding]

• Enter the new Battery Part Number (10 or 11 digits).
• Enter the new Battery Serial Number (10 digits).
• Select the new Battery Vendor.

[OK]
[Do it!]
[Close Controller, Go Back - 06]

Your new Battery should now be coded and the Battery Control Module should be aware of the new Battery.

Note: The 10 digit serial number may be preceded by the battery vendor code, for instance VA0 of Varta. If the code is VA0310314E04G then drop the VA0 and just enter 310314E04G. Sometimes the battery part number sticker can cover up the white sticker with the serial number.

If you are encountering difficulty communicating with modules during or after the coding process make sure the battery charger is connected as per repair manual. Click the photo to enlarge.