# Service bulletin B520920

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: 10246300
- Published by NHTSA: 2023\-12\-06
- Manufacturer's number: B520920
- Manufacturer's date: 2023\-11\-22
- NHTSA component: SEATS

## NHTSA's summary

Various concerns about the third row of seats: 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10246300-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10246300-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Seats

## Vehicles listed

- 2023 BMW X7

## Other bulletins for the same vehicles and component

- [B521923](/bulletins/11016438.md), 2025-04-03, Service bulletin: SEATS. 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](/bulletins/11012090.md), 2024-12-31, Service bulletin: SEATS. 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](/bulletins/11012089.md), 2024-12-31, Service bulletin: SEATS. HEAD RESTRAINT AND/OR BACKREST OF 3RD ROW SEATS CANNOT BE FOLDED DOWN
- [B521019](/bulletins/10252279.md), 2024-04-01, Service bulletin: SEATS. The seat leather upholstery detaches from the front of the thigh support \(aka knee bolster\) of either front seat.
- [B521923](/bulletins/10247565.md), 2024-01-03, Service bulletin: SEATS. 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.
- [B522319](/bulletins/10246302.md), 2023-12-06, Service bulletin: SEATS. Two areas of the third\-row seat backrest that may cause a noise concern have been added.
- [B521423](/bulletins/10246301.md), 2023-12-06, Service bulletin: SEATS. A change in the Bowden cable routing is observed in the third seat row backrest. Replacement Bowden cables are shorter than original parts.
- [B521423](/bulletins/10244505.md), 2023-11-01, Service bulletin: SEATS. A change in Bowden cable routing is observed in the third seat row backrest. Replacement Bowden cables are shorter than original parts.
- [B522319](/bulletins/10244258.md), 2023-11-01, Service bulletin: SEATS. Second seat row blocking access to third seat row, program seat modules. Visible stitching on first row sport seat. Third seat row backrest Bowden cable routing and length change.
- [B520920](/bulletins/10244257.md), 2023-11-01, Service bulletin: SEATS. Various concerns about the third row of seats: 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.

JSON: [/v1/bulletins/10246300](/v1/bulletins/10246300)

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