12 41 020 Removing and installing/replacing starter motor (N52T)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Aluminum-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .
Necessary preliminary tasks:
- Switch off ignition.
- Disconnect BATTERY NEGATIVE LEAD .
- Remove INTAKE PLENUM .
Unlock connector (1) and remove.
Unfasten nut.
Tightening torque 12 42 2AZ .
Remove positive battery cable (2).
Release screw (1).
Installation note:
Replace aluminum screws.
Tightening torque 12 41 1AZ .
Unfasten screws (2).
Installation note:
Replace aluminum screws.
Tightening torque 12 41 2AZ .
Remove starter motor (3).
Installation note:
Check starter pinion and ring gear for damage. Replace starter motor if necessary.
Assemble engine.
Only during starter replacement and on vehicles with MSA (automatic engine start-stop function):
- Use BMW diagnosis system to reset the starter counter.