12 41 020 Removing and installing/replacing starter motor (N47 D20 O1)

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.

Necessary preliminary tasks:

Switch off ignition.
Disconnect BATTERY NEGATIVE LEAD .
Remove REINFORCEMENT PLATE .

Release nut (1) and remove cable.

Tightening torque 12 52 1AZ .

Release nut (2) and remove the positive battery cable.

Tightening torque 12 52 3AZ .

Release cable at clamp (3) from starter motor.

Fig 1: Identifying Clamp And Nut

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Release screws (1), (2) and (3).

Remove starter motor.

Installation note:

Observe screwing sequence.

Position and secure starter motor. Tighten down screws (1) and (2). Tighten down support screw (3).

Tightening torque 12 41 1AZ .

Fig 2: Identifying Starter Motor Screws

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Installation note:

Check starter pinion and ring gear for damage.

Replace damaged starter motor.

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.