Changing the transfer box oil with the diagnostic system
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
Preliminary work
- Refer to REMOVING TRANSMISSION CROSS-MEMBER .
- To guarantee complete emptying and filling of the transfer box: Perform the "oil change" service function with the diagnostic system during the oil change.