61 12 013 Replacing battery negative lead

WARNING: This page is about a different car, the 2011 BMW M3, 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe See Recommended Engine Oils For BMW Group Engines See 1200... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY or 6100... SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY for handling vehicle battery.
Notes and instructions on INTELLIGENT BATTERY SENSOR IBS .

Necessary preliminary tasks

Remove RIGHT LUGGAGE COMPARTMENT TRIM PANEL
Remove TOP TRIM FROM TAIL PANEL

Disconnect plug connection (1).

Slacken nut (2) on battery negative terminal.

Tightening torque 61 21 1AZ .

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 battery negative lead (3) with intelligent battery sensor (IBS) in upward direction.

Release nut (4) and remove cable.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Vehicles up to 12/2006 with IBS

NOTE: IBS2004 is replaced by IBS2006.

Remove battery crash element without replacing

Fig 2: Identifying Battery Crash Element

Courtesy of BMW OF NORTH AMERICA, INC.