12 41 020 Removing and installing/replacing starter motor

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. 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 from battery.
Follow instructions for Disconnecting And Connecting Battery .
Remove reinforcement plate. See FRONT AXLE CARRIER .

Version with ARS:

Release nut (1) and remove pressure lines (2).

Release screws (3) and remove holder (4)

Fig 1: Removing Pressure Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nut (1).

Tightening torque, see 12 41 4AZ and 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Disconnect battery positive lead from starter motor.

Fig 2: Disconnecting Battery Positive Lead From Starter Motor

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque, see 12 41 1AZ and 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Pull starter motor out of transmission mount and turn in order to facilitate access to control leads on starter motor.

Fig 3: Pulling Starter Motor Out Of Transmission Mount

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew nuts (1).

Tightening torque, see 12 41 4AZ and 12 12 1AZ in ENGINE ELECTRICAL SYSTEM - TIGHTENING TORQUES .

Detach control leads (2) from starter motor.

Remove starter motor.

Fig 4: Detaching Control Leads From Starter Motor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check starter pinion and ring gear for damage, replace starter motor if necessary.