Adjusting cavity dimension, lowerable door window glass

Use special tool 51 0 400 to slacken nut (2) and adjust window cavity gap at adjustment pin (1).

Tighten nut (2).

Tightening torque 51 35 6AZ .

Check window cavity gap, repeat operations if necessary.

Fig 1: Identifying Door Window Glass Nut And Adjustment Pin

Courtesy of BMW OF NORTH AMERICA, INC.

5134... Adjusting the rear left and right window cavity gap of the door window glass