Removing the safety battery terminal
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.
WARNING:
Working on 12 V electrical system.
Risk of short circuits! Risk of fire!
Risk of short circuits! Risk of fire!
- Make sure that there is no charger connected to the jump start terminal in the engine compartment.
- Detach battery ground lead from battery.
- For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.
Preliminary work
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
WARNING:
Working on 12 V electrical system.
Risk of short circuits! Risk of fire!
Risk of short circuits! Risk of fire!
- Make sure that there is no charger connected to the jump start terminal in the engine compartment.
- Detach battery ground lead from battery.
- For auxiliary batteries: Detach battery minus cables from all auxiliary batteries.
NOTE:
RISK OF DAMAGE
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS).
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults.
Damage to battery terminal, the safety battery terminal or the intelligent battery sensor (IBS).
Damaged battery terminals can lead to malfunctions or vehicle electrical system faults.
- Detach battery terminal from battery pole by carefully shifting to and fro. Do not pry off using a tool.
- Release latch mechanism (2) of the protective cap (1).
- Feed out the protective cap (1) upwards from the guides (3) and remove it.
- Remove the cover for the positive battery terminal (1).
- Detach the protective cap (1) in an upwards direction.
- Release the nut (1) and place the positive battery cable (2) to the side.
- Release the nut (3) and remove the safety battery terminal (4).
- Unlock plug connections (1) and disconnect.
- Unclip the cover (1) (arrows) and remove it.
- Loosen nut (1).
- Unclip clip (2).
- Remove positive battery cable (3).