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Service bulletin LI27.20-P-055758

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 id10135815
Published by NHTSA2018-05-07
Manufacturer's numberLI27.20-P-055758
Manufacturer's date2015-04-07
NHTSA componentPOWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

NHTSA's summary

Friction power of torque converter lockup clutch is too high (FC 2783) or actuation of torque converter lockup clutch not possible (FC 0741)

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

Transmission and driveline, Automatic transmission, Torque converter

Vehicles listed
MERCEDES BENZ S430
MERCEDES-BENZ AMG C632012 to 2013
MERCEDES-BENZ AMG CLS632011
MERCEDES-BENZ AMG S632013
MERCEDES-BENZ CL632011 to 2013
MERCEDES-BENZ CLS632012 to 2013

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