61 20 503 Vehicle battery - closed current monitoring (M4 2021-2023)

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 needed:

To access the battery ground lead, perform the necessary preliminary work described in the document Disconnecting battery ground lead.

Do not disconnect the battery ground lead!

NOTE: If several 12V batteries are installed in the vehicle:
Closed-circuit current check is possible on the vehicle battery only .

Connect diagnostic system.

Connect the clip-on probe to the battery ground lead of the vehicle battery. The arrow on the clip-on probe must point towards the vehicle battery.

Measure closed-circuit current.