61 20 900 Disconnecting And Connecting Battery Negative Lead

WARNING: Follow safety regulations for handling vehicle battery.
Follow instructions for 61 00... SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY .
Follow instructions on 61 12... GENERAL INFORMATION ON INTELLIGENT BATTERY SENSOR (IBS) .

Open cover (1).

Fig 1: Identifying Cover

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Version without intelligent battery sensor (IBS) :

Loosen nut (1).

Tightening torque 61 21 1AZ .

Disconnect BATTERY NEGATIVE LEAD (2) and secure at side.

Fig 2: Identifying Battery Lead And Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Version with intelligent battery sensor (IBS) :

Loosen nut (1).

Tightening torque 61 21 1AZ .

Disconnect BATTERY NEGATIVE LEAD (2) and secure at side.

Fig 3: Identifying Battery Lead And Nut

Courtesy of BMW OF NORTH AMERICA, INC.