51 32... Adjusting vertical dimension of front left or right side window

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Special tools required:

IMPORTANT: Cavity gap of door window glass is adjusted ideally ex works (works tolerance 0.8 mm).
Recommendation:
Only perform adjustments on the shaft dimension at the door window pane if this is absolutely necessary.

IMPORTANT: Do not slam the door during adjustment and measurement (risk of breaking glass).

Prerequisite:

Vehicle must stand on level ground on its wheels
CHARGE battery
(Full operability of the power windows during the adjustment procedure is only assured with an external power supply)
OUTER WEATHER STRIP removed
FRONT SOUND INSULATION removed

Preparations for measurement:
Rear window lift rail (1) must be centered on holder (2).
- Slacken nut (3) with special tool 51 3 300 (do not release)
- Adjust rear window lift rail (1) until lock washer (4) is centered on nut (3)
- Tighten nut (3)
  Tightening torque 51 33 7AZ .
  
  Fig 1: Identifying Lock Washer, Nut, Holder, And Rail
  Courtesy of BMW OF NORTH AMERICA, INC.
Open door, move door window glass into uppermost position.

Insert special tool 51 0 341 (from set 51 0 340 ) into door lock and manually lock rotary striker.

NOTE: Power window regulator will only move to the end stop via short lift when special tool is inserted.

Fig 2: Preparing Special Tool (51 0 341)
Courtesy of BMW OF NORTH AMERICA, INC.
Measure the cavity gap:
Please observe line of sight when reading (from rear edge of door towards the front).

Determine shaft dimension (X) using special tool 51 0 342 (from set 51 0 340 ) from door window glass horizontally to inner edge of flange (1).

(X) = 10.5 ±1 mm

Fig 3: Measuring Cavity Gap
Courtesy of BMW OF NORTH AMERICA, INC.
Adjust the cavity gap:
Loosen nut (1) with special tool 51 0 400 .

Insert extension in special tool 51 0 400 .

Adjust shaft dimension by twisting the extension and countering with nut (1).

Tightening torque 51 33 6AZ .

Check shaft dimension, repeat adjustment procedure if necessary.

Fig 4: Identifying Nut And Special Tool (51 0 400)
Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After adjusting procedure on shaft dimension: ADJUST FRONT DOOR WINDOW GLASS .