61 21 010 Removing and installing or replacing battery

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

Necessary preliminary tasks:

Security version:

Remove protective cover from distribution box/battery positive terminal (luggage compartment)

Disconnect plug connection (1) of IBS cable.

Unscrew nut (3). Tightening torque 61 21 1AZ .

IMPORTANT: Do not under any circumstances pull/lever safety battery terminal (2) off by force.

Detach safety battery terminal (2) towards top, lay to one side and secure.

Release nuts (4) and remove rollover protection (5).

Fig 1: Identifying IBS Cable Plug Connection, Battery Terminal And Rollover Protection

Courtesy of BMW OF NORTH AMERICA, INC.

Release threaded pin (1) and remove holder (2).

Detach vent (4) in direction of arrow.

Fold both clips (3) open.

Pull battery (5) back from front fixture and remove towards top.

Installation:

Make sure battery (5) is correctly seated in front fixture.

Fig 2: Identifying Threaded Pin, Holder And Battery

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: