Carrying out a system check of the telematics control module emergency battery
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2023 BMW M240i xDrive, 2023 BMW M240i, 2023 BMW 230i xDrive, 2023 BMW 230i, and 2022 BMW M240i xDrive. However, it is still accessible from the selected car via links, so may be relevant.
Precondition
Negative battery cables are disconnected.
- Start the following test module:
- "AT8400_SYSTEL2 - Check of telecommunications system"
- Run a system test.
- If necessary, remount and replace the emergency battery according to the test module instructions before installing the new telematics control module.
Replacement :
Parts: Emergency battery