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 disconnected from the on-board electrical system is activated, the battery electronics are damaged.

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

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

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

Tighten nut (1).

TIGHTENING TORQUES SPECIFICATION

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

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Connect the connector of the CAN bus and lock it.
Clip in clip.

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Activate the 48 V electrical system by closing the hood.
Activation is automatic.

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Follow-up work

Refer to INSTALLING THE STEERING COLUMN SWITCH CLUSTER (SZL) .
Refer to INSTALLING STEERING COLUMN SHROUD LOWER SECTION .
Refer to FITTING STEERING COLUMN SHROUD UPPER SECTION .
Refer to INSTALLING THE STEERING WHEEL (SPORTS STEERING WHEEL) .
Refer to INSTALLING THE AIRBAG UNIT (SPORTS STEERING WHEEL) .
Refer to ACTIVATING VEHICLE-SPECIFIC HIGH-VOLTAGE OR LOW-VOLTAGE ELECTRICAL SYSTEM .
Refer to CHECKING THE AIRBAG FOR FUNCTION .