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 -
Models from 2021
2021 BMW 740I |
2021 BMW 750LI |
2021 BMW B7 ALPINA |
2021 BMW F 850 GS ADVENTURE |
2021 BMW M760I |
Models from 2020
2020 BMW 740I |
2020 BMW 745E |
2020 BMW B7 ALPINA |
2020 BMW M760I |
Models from 2019
2019 BMW 740E |
2019 BMW 740I |
2019 BMW 750I |
2019 BMW 750LI |
2019 BMW B7 ALPINA |
2019 BMW M760I |
Models from 2018
2018 BMW 740E |
2018 BMW 740I |
2018 BMW 750I |
2018 BMW 750LI |
2018 BMW B7 ALPINA |
2018 BMW M760I |
Models from 2016
2016 BMW 740LI |
2016 BMW 750LI |
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. Copyright ©2021 BMW of North America, Inc. 1/4 5/4/2021 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 Copyright ©2021 BMW of North America, Inc. 2/4 5/4/2021 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 Copyright ©2021 BMW of North America, Inc. 3/4 5/4/2021 54 01 21_SUNROOF REVERSES WHEN CLOSING Copyright ©2021 BMW of North America, Inc. 4/4