12 42 500 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 (N54)





Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Switch off ignition
- Disconnect battery negative lead 61 20 900 Disconnecting and Connecting Battery Negative Lead
- Remove intake air manifold Service and Repair





Open cover.
Slacken nut (1).
Tightening torque 12 42 3AZ 12 42 Alternator Lead.
Remove battery positive lead (2) from battery positive terminal.





Release nut (1) on starter.
Tightening torque 12 42 2AZ 12 42 Alternator Lead.
Disconnect battery positive lead from starter.
Release nut (2) on alternator.
Tightening torque 12 42 1AZ 12 42 Alternator Lead.
Release battery positive lead from retainer (3), feed out and remove.





Note:
Add final details to vehicle.
Check stored fault messages.
Now clear the fault memory.