Convertible Top Position Sensor / Switch: Adjustments

54 34 890 - Adjusting Hall sensors on roof crossbar





Necessary preliminary tasks:
- Partially remove convertible top fabric Service and Repair





- Completely close complete sunroof
- Using feeler gauge (3), measure gap (C) between retaining hook (1) and cable connection (2) from cable on left and right
If gap (C) is not identical on left and right, it must be synchronized on left and right.
- Remove drive 67 61 040 Removing and installing/replacing drive unit for folding sunroof
- Move cable with screwdriver until gap (C) on left and right is identical





Open folding sunroof completely until retaining hooks are unlocked.
Folding sunroof is in the 100 % setting.
Measure gap (A) between leading edge and slider plate:
(A) = - 320.6 ± 2 mm

Note:
See overview Overview of Hall Sensors in Convertible Top for a better representation and functional description of Hall sensors.





Note:
1:1 = Gear ratio of mechanism to Hall sensor

Release screw (1).
Press Hall sensor link (2) in direction (D).
Slide Hall sensor link (2) in direction (E).
Tighten screw (1).

Note:
(D) = Roof crossbar, inner side -
(E) = - Roof crossbar, outer side
Hall sensor sleeve must not protrude out of roof crossbar.

Check gap (A) and repeat adjustment if necessary.





- Completely close complete sunroof
- Using feeler gauge (3), measure gap (C) between retaining hook (1) and cable connection (2) from cable on left and right
(C) = 1 - 3 mm

Note:
If gap (C) is outside the tolerance or there are overlaps, this can be adjusted with the Hall sensor.





Release screw (1) and slide holder (2) for Hall sensor in stages.
Tighten down screw (1) and completely close convertible top.
Carry out measurement.
If necessary, carry out adjustment several times until gap (C) is established.
(C) > 3 mm = - slide Hall sensor in direction (F)
(C) < 1 mm = - slide Hall sensor in direction (G)

Note:
(F) = - Roof crossbar, inner side
(G) = - Roof crossbar, outer side





Carry out function check Component Tests and General Diagnostics.
Connect BMW diagnosis system.