Service bulletin B521423
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10244505 |
| Published by NHTSA | 2023-11-01 |
| Manufacturer's number | B521423 |
| Manufacturer's date | 2023-10-25 |
| NHTSA component | SEATS |
NHTSA's summary
A change in Bowden cable routing is observed in the third seat row backrest. Replacement Bowden cables are shorter than original parts.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Seats
| BMW X7 | 2023, 2024 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2023500 | 2023-09-07. Seats And Restraints |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| B521923 | 2026-05-18. Service bulletin. In vehicles equipped with the second row 60% / 40% split seat, the flex cable assembly can come out of the seat rail mechanism (circled). This stops the forwards and backwards travel of the seat. |
|---|---|
| B520126 | 2026-03-13. Service bulletin. The customer brings vehicle in with one or both of the second row 60/40 split seats in the folded position.The seat does not respond to any requests from the second seat row seat switch button(s). |
| B521923 | 2026-01-23. Service bulletin. In vehicles equipped with the second row 60% / 40% split seat, the flex cable assembly can come out of the seat rail mechanism (circled). This stops the forwards and backwards travel of the seat. |
| B521025 | 2025-08-24. Service bulletin. The electric actuator for the third row (3SR) seat changed design and part number, and is used in productionvehicles as of March 28, 2025. There are two such actuators at this seat row, one for the left seating position; and one for the right. |
| B520920 | 2025-08-24. Service bulletin. Various concerns about the third row of seats (3SR): 1. Head restraint (aka headrest), on one or both sides, cannot be folded down. 2. Third-row seating, on one or both sides, cannot be folded down. 3. Noise from third-row seat backrest when the vehicle goes over bumps. |
| B521923 | 2025-04-03. Service bulletin. In vehicles equipped with the second row 60% / 40% split seat, the flex cable assembly can come out of the seat rail mechanism (circled). This stops the forwards and backwards travel of the seat. |
| B521923 | 2024-12-31. Service bulletin. In vehicles equipped with the second row 60% / 40% split seat, the flex cable assembly can come out of the seat rail mechanism (circled). This stops the forwards and backwards travel of the seat. |
| B520920 | 2024-12-31. Service bulletin. HEAD RESTRAINT AND/OR BACKREST OF 3RD ROW SEATS CANNOT BE FOLDED DOWN |
| B521019 | 2024-04-01. Service bulletin. The seat leather upholstery detaches from the front of the thigh support (aka knee bolster) of either front seat. |
| B520124 | 2024-03-02. Service bulletin. Customer states that the seat heating and/or cooling doesn’t meet his/her expectations. |