Install battery earth lead

• Position the battery earth lead (3).
• Tighten nut (2).
  TIGHTENING TORQUES SPECIFICATION
  
  

  Battery earth lead to body
  Flange Nut M8	Tightening torque	15 Nm

• Connect the connector (1) to the intelligent battery sensor (IBS).

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up Work 

• Reconnect all battery EARTH LEADS
• Activate the 48v ELECTRICAL SYSTEM .