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 (See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD
and/or 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD
)
Follow instructions for disconnecting and connecting battery (See 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY and/or 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY )
- Remove intake air manifold
Remove protective cap (not shown).
Release screw, remove battery positive lead (1) from battery positive terminal.
Tightening torque 12 42 3AZ, see ENGINE ELECTRICAL SYSTEM -- TORQUE SPECIFICATIONS -- TWIN TURBO .
Remove protective cap and release nut underneath.
Tightening torque 12 42 1AZ, see ENGINE ELECTRICAL SYSTEM -- TORQUE SPECIFICATIONS -- TWIN TURBO .
Disconnect battery positive lead (1) from alternator.
Unlock plug (1) and remove.
Unfasten nut.
Tightening torque 12 42 2AZ, see ENGINE ELECTRICAL SYSTEM -- TORQUE SPECIFICATIONS -- TWIN TURBO .
Disconnect battery positive lead (2) from starter motor.
Unclip battery positive lead (1) from holder (2) and remove.
Check stored fault messages.
Now clear the fault memory.