Replacing Battery Positive Lead (Between Starter, Alternator and Battery Positive Terminal)

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 battery negative lead Disconnecting and Connecting Battery Negative Lead
- Remove intake air manifold Service and Repair





Remove protective cap (not shown).
Release screw, remove battery positive lead (1) from battery positive terminal.
Tightening torque 12 42 3AZ 12 42 Alternator Lead.





Remove protective cap and release nut underneath.
Tightening torque 12 42 1AZ 12 42 Alternator Lead.
Disconnect battery positive lead (1) from alternator.





Unlock plug (1) and remove.
Unfasten nut.
Tightening torque 12 42 2AZ 12 42 Alternator Lead.
Disconnect battery positive lead (2) from starter motor.





Unclip battery positive lead (1) from holder (2) and remove.





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