61 12 013 Replacing battery negative lead

WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe SAFETY INSTRUCTIONS for handling vehicle battery.
Read and comply with notes and instructions on INTELLIGENT BATTERY SENSOR .

Necessary preliminary tasks:

Partially remove LUGGAGE COMPARTMENT WHEEL ARCH TRIM ON RIGHT

Slacken nut (1) on negative battery terminal.

Tightening torque 61 21 1AZ .

IMPORTANT: Do not under any circumstances use force to pull off negative terminal.

Detach battery negative lead with intelligent battery sensor (IBS) in upward direction, lay to one side and secure.

Disconnect plug connection (2).

Fig 1: Identifying Slacken Nut On Negative Battery Terminal

Courtesy of BMW OF NORTH AMERICA, INC.

Remove nut (1) and battery negative lead (2).

Tightening torque 61 21 6AZ .

Fig 2: Identifying Nut And Battery Earth Lead

Courtesy of BMW OF NORTH AMERICA, INC.