12 42 510 Replacing battery positive lead (between starter and B+ terminal) (S65)

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Read fault memory. Switch off ignition.

Observe safety instructions for handling vehicle battery . See 61 00 ... SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY .

Observe instructions for disconnecting and connecting battery .

Disconnect battery negative lead from battery and lay to one side.. See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .

Necessary preliminary tasks:

Remove intake air manifold . See 11 61 050 REMOVING AND INSTALLING AIR INTAKE MANIFOLD (S65) .

Release and raise cable duct for engine wiring harness.

Release nut (2) on B+ lead.

Remove B+ leads.

Installation:

Tightening torque, 12 41 1AZ , see STARTER WITH MOUNTING .

Fig 1: Identifying B+ Lead Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release clamp for B+ lead on cylinder no. 4.

Unclip lead from cable holders.

Fig 2: Locating B+ Lead Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Remove cover from B+ terminal. Unfasten nut. Remove B+ lead.

Installation:

Tightening torque, 12 42 1AZ , see STARTER LEAD .

Fig 3: Locating B+ Terminal Nut

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Assemble engine.

Interrogate fault memory of DME control unit.

Check stored fault messages.

Rectify faults and clear fault memory.

Read fault memory. Switch off ignition.

Observe safety instructions for handling vehicle battery . See 61 00 ... SAFETY INSTRUCTIONS FOR HANDLING VEHICLE BATTERY .

Observe instructions for disconnecting and connecting battery .

Disconnect battery negative lead from battery and lay to one side.. See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .

Necessary preliminary tasks:

Remove intake air manifold . See 11 61 050 REMOVING AND INSTALLING AIR INTAKE MANIFOLD (S65) .

Release and raise cable duct for engine wiring harness.

Release nut (2) on B+ lead.

Remove B+ leads.

Installation:

Tightening torque, 12 41 1AZ , see STARTER WITH MOUNTING .

Fig 1: Identifying B+ Lead Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release clamp for B+ lead on cylinder no. 4.

Unclip lead from cable holders.

Fig 2: Locating B+ Lead Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Remove cover from B+ terminal. Unfasten nut. Remove B+ lead.

Installation:

Tightening torque, 12 42 1AZ , see STARTER LEAD .

Fig 3: Locating B+ Terminal Nut

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Assemble engine.

Interrogate fault memory of DME control unit.

Check stored fault messages.

Rectify faults and clear fault memory.