61 12 013 Replacing negative battery lead

WARNING: High-voltage system - risk of serious injury or death.
The following points must be strictly observed prior to starting work :
Disconnect HIGH-VOLTAGE SYSTEM from power
SAFETY INFORMATION for handling electric/hybrid vehicles.

WARNING: Observe SAFETY INFORMATION for handling vehicle battery.
Follow instructions for DISCONNECTING AND CONNECTING BATTERY .
Follow instructions on INTELLIGENT BATTERY SENSOR (IBS) .

Necessary preliminary work:

Clamp off BATTERY LEAD FROM NEGATIVE CONNECTION POINT
Remove FRONT LUGGAGE COMPARTMENT WELL

IMPORTANT: Do not under any circumstances detach or lever off intelligent battery sensor (2) from battery by force.

Loosen nut (1).

Tightening torque 61 21 1AZ .

Remove intelligent battery sensor (2) from battery and place battery earth lead to one side.

Fig 1: Identifying Intelligent Battery Sensor And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque 61 21 5AZ .

Remove battery earth lead (2) from threaded bolt and feed out.

Installation note:

Caution, risk of damage to ground pin. Do not exceed the prescribed tightening torque.

Ensure the correct mounting of the battery earth lead (2).

Ensure the correct mounting of the grounding cable (3).

Fig 2: Identifying Battery Earth Lead And Nut

Courtesy of BMW OF NORTH AMERICA, INC.