BMW X3 Service & Repair Manual: Removing and installing/replacing starter motor (N52T)

BMW X3 Service & Repair Manual / Electrical / Starter with mounting / Removing and installing/replacing starter motor (N52T)

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) .

Necessary preliminary tasks:

  • Switch off ignition.
  • Disconnect BATTERY NEGATIVE LEAD .
  • Remove INTAKE PLENUM .

Unlock connector (1) and remove.

Unfasten nut.

Remove positive battery cable (2).

Electrical

Release screw (1).

Installation note:

Replace aluminum screws.

Unfasten screws (2).

Installation note:

Replace aluminum screws.

Electrical

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.
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