Removing and installing/replacing starter motor (B46/B48 4-Cyl. Engine) (4' Series Coupe/Convertible, 4' Series Gran Coupe Sedan)

Necessary preliminary tasks: 

• Disconnect BATTERY EARTH LEAD .
• All-wheel drive vehicles:  Remove REINFORCEMENT PLATE .
• Loosen ACOUSTIC COVER OF OIL SUMP .

Loosen the screws along the arrows.

Remove connecting rod (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen nut (1), remove positive battery cable (2) and place to one side.

Loosen nut (3), remove clamp (4) and place to one side.

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen screws (1).

Remove starter motor (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Install starter motor (2).

Tighten down screws (1).

Tightening torque 12 41 1AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Connect positive battery cable to starter motor.

Bring anti-twist safeguard (1) of the positive battery cable on the starter motor to limit position (2).

Tighten nut (3).

Tightening torque 12 42 2AZ .

Connect clamp (5) to starter motor.

Tighten nut (4).

Tightening torque 12 42 3AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Install connecting rod (1).

Tighten screws along arrows.

Tightening torque 12 41 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

• Install ACOUSTIC COVER OF OIL SUMP .
• All-wheel drive vehicles:  Install REINFORCEMENT PLATE .
• Connect BATTERY EARTH LEAD .

Only during starter replacement and on vehicles with MSA (automatic engine start-stop function): 

• Reset start counter using BMW diagnosis system.