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Home >> BMW >> 2021 >> 430i xDrive >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> General Electrical System -- Repair (G22, G23 & G26) >> 61 12 Auxiliary Cable >> 61 12 013 Replacing the battery ground lead (4' Series coupe models) >> Remove battery ground lead

Remove battery ground lead

Preliminary work 

WARNING: Deactivate the 12V electrical system. 
Risk of short circuits! risk of fire! 
  • Make sure that there is No battery charger  connected to the jump start terminal in the engine compartment.
  • For vehicles with additional electrical systems (48Velectrical system, high-voltage vehicle electrical system), this absolutely must be deactivated Before  the vehicle battery is disconnected.
G14644730Courtesy of BMW OF NORTH AMERICA, INC.