61 21 010 Removing and installing (replacing) battery (from 03/2007)

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Observe Safety instructions for handling vehicle battery.
Observe notes on power supply /on intelligent battery sensor (IBS).

Necessary preliminary tasks:

Remove power distributor .

IMPORTANT: Do not under any circumstances pull/lever safety battery terminal off by force.

Detach vent (1) in direction of arrow.

Open cover (2) and slacken nut underneath.

Tightening torque, see 61 21 1AZ in 61 21 BATTERY WITH TERMINAL .

Detach safety battery terminal (3) towards top, lay to one side and secure.

Release threaded pin (4) and remove with holder.

Remove battery towards right side.

Installation:

Make sure battery is correctly seated in associated fixture.

Fig 1: Detaching Vent

Courtesy of BMW OF NORTH AMERICA, INC.

Replacing version with intelligent battery sensor (IBS):

Read out fault memory, clear if necessary
Register battery replacement