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Service bulletin SSM 51447

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 id10233726
Published by NHTSA2023-04-05
Manufacturer's numberSSM 51447
Manufacturer's date2023-03-15
NHTSA componentSERVICE BRAKES, AIR:ANTILOCK

NHTSA's summary

Some 2020-2021 F53/F59 Stripped Chassis vehicles may experience an illuminated anti-lock brake system (ABS) warning indicator with diagnostic trouble code (DTC) C0037 and/or C003A. If normal diagnostics lead to replacement of the tone ring, be advised that the tone ring has been superseded with improved parts for both the passive (MU9Z-2C026-D, open shutter design) and active (MU9Z-2C026-C, closed shutter design) systems. Follow Workshop Manual, Section 206-04 for tone ring replacement.

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

Brakes, Anti-lock brakes

Trouble codes named

C0037, C003A

Vehicles listed
FORD F-532020 to 2021
FORD F-592020 to 2021

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