Installing the left hood lock

Attach the cable (3).
Feed in the hood lock.
Replace screws (2).
Parts: Screws

Tighten down screws (2).

TIGHTENING TORQUE SPECIFICATIONS

Hood lock
screw Replace screws	Tightening torque	8 Nm

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Connect and lock the plug connections (1).

Only on vehicles with active pedestrian protection

Disconnecting all battery ground leads

See 61 20 900 DISCONNECTING AND CONNECTING BATTERY GROUND LEAD (ALL NEGATIVE BATTERY CABLES) (740I 2016-2022, 740I XDRIVE 2017-2022, 750I 2016-2019, 750I XDRIVE 2016-2022, M760I XDRIVE 2017-2022) , or 61 20 900 DISCONNECTING AND CONNECTING BATTERY GROUND LEAD (ALL NEGATIVE BATTERY CABLES) (740E XDRIVE PHEV 2017-2019, 745E XDRIVE PHEV 2020-2022) .

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Activating the 48 V electrical system

Precondition

Ignition is switched off.

NOTE: RISK OF DAMAGE
Damage to the 48-V battery
If a 48-V battery that is disconnected from the electrical system is activated, the battery electronics will be damaged.

Only ever activate the 48 V electrical system when the 48 V battery is fully connected up.

Raise the battery ground cable (1).
Remove special tool 2 452 007 .

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Release the negative battery cable (2) of the 48-V battery from the attachment.
Position the negative battery cable (2) of the 48-V battery on the negative battery terminal.

Tighten the nut (1).

TIGHTENING TORQUE SPECIFICATIONS

Negative battery cable to 48-V battery
Nut M8	tightening torque	19 Nm

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Connect the connector (1) of the CAN bus and lock it.
Clip in the clip (2).

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Activate the 48 V electrical system by closing the hood.

The activation takes place automatically.

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Follow-up work

Refer to INSTALLING THE COVER OF THE ENGINE COMPARTMENT CENTER .