WenmarOpen by Wenmar Pro

Service bulletin LI77.25-P-076544

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 id10241517
Published by NHTSA2023-09-01
Manufacturer's numberLI77.25-P-076544
Manufacturer's date2023-08-18
NHTSA componentELECTRICAL SYSTEM; STRUCTURE

NHTSA's summary

Rear spoiler sporadically remains in opened or closed position and a fault message appears in the instrument cluster. The rear spoiler can then no longer be actuated manually using the button. The function of the rear spoiler is re-established after an ignition reset and the fault message is no longer present in the instrument cluster. Software of the AMG DRIVE UNIT. All vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to Latest SW Available. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1.All vehicles of model series 232 with M177 (SL55/63) from start of production - end of modification year 22/1 - manufacturing date before April 21, 2023: --> Perform software update of the AMG DRIVE UNIT N145/1 to Latest SW Available. All vehicles of model series 232 with M177 (SL55/63) from start of modification year 22/2 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1. Valid for all vehicles of model series 232 with M139L (SL43) from start of modification year 22/1 - manufacturing date on/after April 21, 2023: --> Perform SCN coding of the AMG DRIVE UNIT N145/1.

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

Body and frame, Electrical system

Vehicles listed
MERCEDES-BENZ AMG SL432022 to 2024
MERCEDES-BENZ AMG SL552022 to 2024
MERCEDES-BENZ AMG SL632022 to 2023
MERCEDES-BENZ AMG SL63 S E2024

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