12 42 500 Replacing battery positive lead (between starter, alternator and battery positive terminal)

Necessary preliminary tasks:

Read out fault memory of DME control unit
Switch off ignition
Disconnect NEGATIVE BATTERY LEAD .
Remove sound generator SOUND GENERATOR .
Remove LOCK BRIDGE .
Disconnect battery positive lead from battery positive terminal. Tightening torque: 5 Nm
Unlock plug on bulkhead and disconnect

Release clamps (1) and detach air intake hose (2).

Fig 1: Identifying Clamps (1) And Air Intake Hose (2)

G04790022

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Release nut and disconnect battery positive lead (2).

Tightening torque: 14 Nm

Fig 2: Identifying Plug (1) And Battery Positive Lead (2)

G04796451

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw and remove holder (1).

Fig 3: Identifying Screw And Holder

G04790017

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and remove.

Release nut and disconnect battery positive lead (2).

Tightening torque: 13.5 Nm

Fig 4: Identifying Plug (1) And Battery Positive Lead (2) With Nut

G04796452

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts.

Tightening torque: 8 Nm

Feed out air wiring harness (1) and remove.

Fig 5: Identifying Wiring Harness (1) With Bolts

G04796453

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Check stored fault messages.
Now clear the fault memory.