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Home >> BMW >> 2009 >> 650i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 3021 (General Electrical System - Repair) >> Battery >> 61 20 900 Disconnecting and connecting battery negative lead

61 20 900 Disconnecting and connecting battery negative lead

WARNING: This page is about a different car, the 2013 BMW X5 M, 2012 BMW X5 M, 2011 BMW X5 M, and 2010 BMW X5 M. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Observe SAFETY INFORMATIONS  for handling vehicle battery.
Follow instructions for DISCONNECTING AND CONNECTING BATTERY .
Follow instructions on INTELLIGENT BATTERY SENSOR (IBS) .

Necessary preliminary work 

IMPORTANT: Do not under any circumstances detach or lever off intelligent battery sensor (2) from battery by force.

Loosen nut (1). Tightening torque 61 21 1AZ .

Remove intelligent battery sensor (2) from battery and secure to side.

Fig 1: Identifying Intelligent Battery Sensor And Nut
G08530471Courtesy of BMW OF NORTH AMERICA, INC.