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Service bulletin LI77.33-P-075246

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 id10240162
Published by NHTSA2023-08-02
Manufacturer's numberLI77.33-P-075246
Manufacturer's date2023-07-27
NHTSA componentSTRUCTURE; VISIBILITY:SUN/MOON ROOF ASSEMBLY

NHTSA's summary

Soft top does not close: A: Soft top does not close completely B: Fault message following teach-in process Causes of repair needs for A and B: A. Locking hooks may require adjustment or Header Bow does not reach intermediate position B. Calibration of the Header Bow may be required Analysis to identify the remedy: If available, perform a software update of the rear passenger compartment control unit (N22/6). Then attempt operation of Soft Top. If fault continue to be present: Check the fault codes in N22/6 (Rear passenger compartment control unit) in the quick test. • B196277 and/or B196377: Perform teach-in process. Select "YES" for the question regarding part exchange. If fault message appears following the process, continue with A. If no fault message appears, check the function. If the soft top does not function, continue with B. • B228646 and/or B228654: Execute rear passenger compartment control unit (N22/6) control unit log and continue with step A. • B180013 and/or B180071 and/or B180077: Check the wiring at the engine of the soft top lock in the top of the soft top as well as the Hall sensor above. • If nothing visually can be seen: Replace electric motor A2329066500 and Hall sensor. • If remedy is successful: Processing is complete; otherwise, continue with step B. If none of the specified fault codes occurs in the quick test, continue with step B.

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, Glass, wipers and mirrors, Sunroof

Trouble codes named

B1800, B1962, B1963, B2286

Vehicles listed
MERCEDES-BENZ AMG SL432022 to 2023
MERCEDES-BENZ AMG SL552022 to 2023
MERCEDES-BENZ AMG SL632022 to 2023

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