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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11009139
Published by NHTSA2024-10-25
Manufacturer's numberLI91.16-P-078472
Manufacturer's date2024-10-22
NHTSA componentSEATS

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

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

Vehicles listed
MERCEDES-BENZ S 5002021
MERCEDES-BENZ S 5002023
MERCEDES-BENZ S 500 4MATIC2022
MERCEDES-BENZ S 500 4MATIC2024
MERCEDES-BENZ S 5802021
MERCEDES-BENZ S 5802023
MERCEDES-BENZ S 580 4MATIC2022
MERCEDES-BENZ S 580 4MATIC2024
MERCEDES-BENZ S 580 E2023
MERCEDES-BENZ S 580 E 4MATIC2024
MERCEDES-MAYBACH S 5802021
MERCEDES-MAYBACH S 580 4MATIC2022 to 2024
MERCEDES-MAYBACH S 6802023 to 2024
MERCEDES-MAYBACH S 680 4MATIC2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.