Necessary preliminary tasks

• Remove REAR DOOR WINDOW GLASS 

Unscrew nuts (1).

Tightening torque, see 51 35 2AZ in 51 35 POWER WINDOWS, REAR .

Fig 1: Identifying Rear Power Window Unit Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Turn power window unit (1) in rear door and feed out in direction of arrow.

Fig 2: Removing Rear Door Power Window Unit In Direction Of Arrow

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement: 

Release screws (1) and detach flat motor (2) from power window unit (3).

Tightening torque, see 51 35 2AZ in 51 35 POWER WINDOWS, REAR .

Fig 3: Removing Flat Motor From Power Window Unit

Courtesy of BMW OF NORTH AMERICA, INC.