12 42 550 Replacing Battery Positive Lead Between Starter, Alternator and Battery Positive Terminal

12 42 550 Replacing battery positive lead between starter, alternator and battery positive terminal (N63)







Necessary preliminary tasks:
- Read out fault memory of DME control unit
- Turn off ignition
- Disconnect battery negative lead
- Remove right intercooler
- Remove right intake manifold







Open cover.
Release screw (1).
Tightening torque 12 42 3AZ.
Remove battery positive lead (2) from battery positive terminal.
Release battery positive lead (2) from retainers (3).







Release clamp (1).
Tightening torque 13 71 8AZ.
Release clamp (2).
Replace clamp (2).
Remove left charge-air duct (3).
Check gasket on turbocharger.Replace damaged gasket.







Detach hose (1) from clean-air pipe.
Release screw (2).
Tightening torque 13 71 1AZ.
Detach clean-air pipe (3) in direction of travel from turbocharger.
Check gasket on clean-air pipe. Replace damaged gasket.







Detach cover (1) and release nut underneath.
Tightening torque 12 42 1AZ.

Installation:
Reinstall cover (1) without fail.
Risk of short circuits.

Disconnect battery positive lead (2) from alternator.







Release battery positive lead (1) from retainers (2).







Release battery positive lead (1) from retainer (2).







Release screws (1).
Tightening torque 12 42 7AZ.
Release nut (2) on starter.
Tightening torque 12 42 2AZ.
Feed out battery positive lead (3) and remove.







NOTE:
Reassemble the vehicle.
Check stored fault message.
Delete fault memory.