61 12 013 Replacing Battery Negative Lead

WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. 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:

Remove LUGGAGE COMPARTMENT TRIM ON SIDE PANEL ON RIGHT

Security version:

Remove LUGGAGE COMPARTMENT EQUIPMENT CARRIER

Slacken nut (1) on negative battery terminal.

Tightening torque: 61 21 1AZ . See BATTERY WITH TERMINAL for specs.

IMPORTANT:

Do not under any circumstances use force to pull off pole shoe.

Do not under any circumstances release socket-head cap screw of IBS.

Detach negative battery lead with intelligent battery sensor (IBS) in upward direction.

Disconnect plug connection (2).

Disconnect plug connection (3).

Release nut (4) and battery negative lead (5).

Tightening torque: 61 21 2AZ . See BATTERY WITH TERMINAL for specs.

Fig 1: Identifying Plug Connection, Battery Negative Lead And Nuts

Courtesy of BMW OF NORTH AMERICA, INC.