Remove battery

WARNING: High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT

NOTE: TECHNICAL INFORMATION
With the ignition off and the high-voltage safety plug disconnected, the Check Control message "High voltage system faulty" is displayed by default.
The message "High-voltage system switched off" (absence of voltage) is only displayed when the ignition is switched on.

Preliminary work

Refer to DISCONNECTING ALL BATTERY GROUND LEADS .

WARNING: Working on 12 V electrical system.
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: TECHNICAL INFORMATION
Observe the notes on handling the vehicle battery.
For additional information see:
SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY
NOTES FOR DISCONNECTING AND CONNECTING THE VEHICLE BATTERY
NOTES ON INTELLIGENT BATTERY SENSOR (IBS)

Loosen nut (1).
Disconnect the negative battery cable from the battery.
Unlock plug connection (3) and disconnect.
Feed out battery ground cable (2) and set it aside.

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Loosen expanding rivet (arrow).
Remove the mount (1) for the seal.

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Release screws (arrows) and remove tension strut (1).

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F56 Battery Electric Vehicle:
Unlock plug connection (1) and disconnect.

Unclip the cable clip (2).

Loosen screws (3).

Feed out and remove the heat pump controller (4).

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Detach nut from positive battery cable (1).
Disconnect positive battery cable (1) and set it aside.
WARNING:
Unprotected battery terminals.
Risk of short circuits! Risk of fire!
- Cover the vehicle battery.
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Disconnect the air bleeder hose (arrow) from the battery (2).
Unscrew the screw (3) and guide it out with the holder and remove.
Feed out and remove the battery (4).