LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2017 >> M240i 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> General Electrical System -- Repair (F22 & F23) >> 61 20 Battery, General >> 61 20 900 Disconnecting and connecting negative battery cable (2' Series coupe and convertible, 2017-2021)

61 20 900 Disconnecting and connecting negative battery cable (2' Series coupe and convertible, 2017-2021)

WARNING: Observe SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY .
Follow notes BATTERY REPLACEMENT INFORMATION  for disconnecting and connecting battery!
Observe notes on VOLTAGE SUPPLY /on intelligent battery sensor (IBS).

Necessary preliminary work: 

For F2Q: F21: F22: F23: F52: F87: 

Loosen nut (1).

Tightening torque 61 21 1AZ .

CAUTION: Do not under any circumstances use force to pull off negative terminal.

Pull off battery earth lead (2) and IBS in an upward direction, place to one side and secure.

G10098402Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: With lead-acid battery (F3x only).

Loosen nut (1).

Tightening torque 61 21 1AZ .

CAUTION: Do not under any circumstances use force to pull off negative terminal.

Pull off battery negative lead and IBS (2) in an upward direction, place to one side and secure.

G10098406Courtesy of BMW OF NORTH AMERICA, INC.