B540121

Service Bulletin Details

Public Details for: B540121

Sunroof reverses when closing: after the vehicle is left in the hot sun and/or high temperatures with the sunroof in the vented position, the sunroof may reverse (anti-trap activates) when closing.


- 2021 - 2020 - 2019 - 2018 - 2017 - 2016 -

5/4/2021
54 01 21_SUNROOF REVERSES WHEN CLOSING
SIB 54 01 21
SUNROOF REVERSES WHEN CLOSING
2021-04-07
MODEL
E-Series
G12
Model Description
7 Series Sedan
Affected Option Code
Without 402 (Panoramic moonroof)
SITUATION
This situation ONLY affects vehicles without option code 402 (Panoramic moonroof).
After the vehicle is left in the hot sun and/or high temperatures with the sunroof in the vented position, the
sunroof may reverse (anti-trap activates) when closing.
CAUSE
Temperature changes can lead to unfavorable tolerances in the sunroof, leading to false anti-trapping.
CORRECTION
One or more of the following may be necessary:
Check adjustment of the sunroof glass panel
Check adjustment of the sunroof frame
Re-initialize the sunroof
Lubricate the sunroof perimeter seal
PROCEDURE
1. Remove the sunroof perimeter seal following repair instructions REP 54 12 117 “Replacing seal for glass
slide/tilt roof panel”.
2. Measure the gap between the sunroof
glass panel and the roof as shown at 6 points
1a, 1b, 1c, 2a, 2b, 2c.
Gap 1a should match gap 2a.
Gap 1 should match gap 2.
Gap 1b should match gap 2b.
If the gaps measure differently side to side,
continue to step 3. Otherwise, continue to
step 5.
3. Lower the headliner to check the position of
the sunroof frame using alignment tool 2 354
941 as shown.
Ensure the alignment tool fits easily and
completely into the alignment bores. If the
tool does not align correctly in the frame,
loosen the frame bolts, adjust the frame as
necessary, and torque the bolts to 9.5 Nm.
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54 01 21_SUNROOF REVERSES WHEN CLOSING
Note: The alignment tool will insert vertically,
without tilting, if the sunroof frame is correctly
aligned.
4. Re check the gaps from step 2 again to ensure they now match.
5. Similar to the measurements taken in step
2, compare the gap measurements at the
front and rear of the glass.
Gap 3a should be 1 mm smaller than gap 4a.
Gap 3 should be 1 mm smaller than gap 4.
Gap 3b should be 1 mm smaller than gap 4b.
If the gaps are incorrect, adjust the sunroof
glass panel following repair instructions REP
54 12 003 “Adjusting glass slide/tilt
sunroof panel” and continue to step 6. If the
gaps are correct, continue to step 6.
6. Re-install a new perimeter seal following repair instructions REP 54 12 117 “Replacing seal for glass
slide/tilt roof panel”.
7. Perform a manual initialization (long hold of the sunroof button) WITHOUT a battery charger attached.
8. Coat the replacement perimeter seal using BMW Group Lubricant PF 1-(50 gr) P/N 83 23 0 309 627.
9. Completely re-assemble the vehicle and test drive to ensure no wind noise is present after repairs.
PARTS INFORMATION
Obtain and confirm the part numbers for your specific vehicle by entering the chassis number in either ETK
or AIR which takes into account specific equipment and/or options.
Part Number
Refer to AIR/ETK
Description
Surrounding seal
Quantity
1
Sublet – Bulk Material
Part Number
83 23 0 309 627
Description
BMW Group Lubricant PF 1-(50g)
Quantity
As needed
WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.
Defect Code:
6761011200
Glass tilt sunroof slide drive (SHD, panoramic glass
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54 01 21_SUNROOF REVERSES WHEN CLOSING
sunroof)/sliding headliner/roller sunblinds Permanent
failure
Steps 1, 2, 5 to 9
Labor
Operation
54 12 117
Or:
54 12 521
And:
54 12 503
Description
Labor Allowance
Replace gasket for glass slide/tilt sunroof panel (Main
work)
Refer to AIR
Replace gasket for glass slide/tilt sunroof panel (Plus
Work)
Refer to AIR
Adjusting glass slide/tilt sunroof panel
Refer to AIR
If you are using a Main labor code for another repair, use the Plus code labor operation 51 12 521 instead of
51 12 117.
And, additionally with the above:
Steps 3 to 4
Labor
Operation
51 44 925
And:
54 99 000
Description
Labor Allowance
Lowering the headlining with SHD
Refer to AIR
Work time to adjust sunroof frame
4 FRU
Refer to AIR for the corresponding flat rate unit (FRU) allowances.
Work time labor operation code 54 99 000 is not considered a Main labor operation.
Based on which applies to your center, please refer to SI B01 01 20 or B01 07 20 for claiming your
diagnosis work time, job/repair work time, and for the RO/claim repair and work time explanation procedures
And, as needed:
Sublet – Bulk Materials (RO and Claim Comments Required)
Sublet Code
4
See the sublet
reimbursement
calculations below
Reimbursement for the repair-related bulk material (Do not use the
BMW part number for claim submission)
Sublet reimbursement calculation for claiming the applicable repair-related bulk material (BMW part
numbers) is at the dealer net price amount for the quantity used plus your center’s handling.
Enter this material cost in sublet and itemize the amount on the repair order and in claim comment section.
QUESTIONS REGARDING THIS BULLETIN
Technical inquiries
Warranty inquiries
Parts inquiries
Submit feedback at the top of this bulletin
Please contact the Warranty department by either using the Live Chat that’s
available in the Warranty Documentation Portal or through IDS by selecting
Coverage, Policy, Coding Questions and Mileage Corrections
Submit an IDS ticket to the Parts Department
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