61 20 900 Disconnecting And Connecting Battery Negative Lead

WARNING: This page is about a different variant/trim than selected.

WARNING:

Observe safety instructions for handling vehicle battery.

Observe notes on power supply / on intelligent battery sensor (IBS ).

Necessary preliminary tasks:

Version with intelligent battery sensor (IBS):

Loosen nut (1). Tightening torque, see 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 socket head cap screw of IBS (2).

Detach battery negative lead (3) with IBS (2) in upward direction from battery, lay to one side and secure.

Fig 1: Identifying Battery Sensor IBS And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Version without intelligent battery sensor (IBS):

Slacken nut of battery negative lead (1). Tightening torque, see 61 21 1AZ in 61 21 BATTERY WITH TERMINAL .

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

Detach battery negative lead (1) towards top from battery, lay to one side and secure.

Fig 2: Identifying Slacken Nut Of Battery Negative Lead

Courtesy of BMW OF NORTH AMERICA, INC.