# Service bulletin LI91.16\-P\-078472

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: 11009139
- Published by NHTSA: 2024\-10\-25
- Manufacturer's number: LI91.16\-P\-078472
- Manufacturer's date: 2024\-10\-22
- NHTSA component: SEATS

## NHTSA's summary

Complaint When driving on rough ground, there may be noises from the 4\-way head restraint of the front seats. The fault profile is not present at the limit stops \(head restraint entirely retracted or entirely extended\). Cause Head restraint has increased play between the worm and gearwheel in the head restraint mechanism. Remedy Check play/noise \(see video attachment, headrest OK/headrest not OK\). Please exchange the head restraint in the event of a not OK result.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11009139-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11009139-9999.pdf)

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

## Components

Seats

## Vehicles listed

- 2021 MERCEDES\-BENZ S 500
- 2023 MERCEDES\-BENZ S 500
- 2022 MERCEDES\-BENZ S 500 4MATIC
- 2024 MERCEDES\-BENZ S 500 4MATIC
- 2021 MERCEDES\-BENZ S 580
- 2023 MERCEDES\-BENZ S 580
- 2022 MERCEDES\-BENZ S 580 4MATIC
- 2024 MERCEDES\-BENZ S 580 4MATIC
- 2023 MERCEDES\-BENZ S 580 E
- 2024 MERCEDES\-BENZ S 580 E 4MATIC
- 2021 MERCEDES\-MAYBACH S 580
- 2022 to 2024 MERCEDES\-MAYBACH S 580 4MATIC
- 2023 to 2024 MERCEDES\-MAYBACH S 680
- 2022 MERCEDES\-MAYBACH S 680 4MATIC

JSON: [/v1/bulletins/11009139](/v1/bulletins/11009139)

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