Ideal adjustment, longitudinal direction
Open door window approximately 5 cm.
Insert the special tool 51 0 000
into the mirror triangle from above.
Raise the door window.
51 0 000
Door window glass must rest without play on special tool.
The retraction depth of the door window glass is 17 mm ± 1 mm in the area of the mirror triangle.
Courtesy of BMW OF NORTH AMERICA, INC.