61 12 013 Replacing battery negative lead

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2008 BMW 335xi, 2008 BMW 335i, 2008 BMW 328xi, 2008 BMW 328i, and 2007 BMW 335xi. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe Safety Instructions 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.

For tightening torque refer to 61 21 1AZ in 61 21 BATTERY WITH TERMINAL .

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

Do not under any circumstances release sockethead 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 Plug Connection, Nut And Negative Battery Lead

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.