Service bulletin M1557
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10217255 |
| Published by NHTSA | 2022-08-05 |
| Manufacturer's number | M1557 |
| Manufacturer's date | 2022-07-11 |
| NHTSA component | SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM |
NHTSA's summary
SERVICE BULLETIN M1557: TOURING AND TRIKE REAR BRAKE SWITCH. PURPOSE: This bulletin informs dealers that Harley-Davidson has a mid year change in how the Touring and Trike vehicles receive its rear brake signal input. The Touring and Trike vehicles will now receive rear brake input signal from a brake switch and will no longer activate the brake light based on rear brake pressure in the Electro Hydraulic Control Unit (EHCU). 2022 Electrical Diagnostic Manual (EDM) and Service Manual will be updated with this change. See Service Information Portal (SIP) for electronic version of manuals.
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, Electrical system
| HARLEY-DAVIDSON FLHP | 2022 |
|---|---|
| HARLEY-DAVIDSON FLHR | 2022 |
| HARLEY-DAVIDSON FLHRXS | 2022 |
| HARLEY-DAVIDSON FLHT | 2022 |
| HARLEY-DAVIDSON FLHTCUTG | 2022 |
| HARLEY-DAVIDSON FLHTCUTGSE | 2022 |
| HARLEY-DAVIDSON FLHTK | 2022 |
| HARLEY-DAVIDSON FLHTP | 2022 |
| HARLEY-DAVIDSON FLHX | 2022 |
| HARLEY-DAVIDSON FLHXS | 2022 |
| HARLEY-DAVIDSON FLHXST | 2022 |
| HARLEY-DAVIDSON FLRT | 2022 |
| HARLEY-DAVIDSON FLTRK | 2022 |
| HARLEY-DAVIDSON FLTRKSE | 2022 |
| HARLEY-DAVIDSON FLTRX | 2022 |
| HARLEY-DAVIDSON FLTRXS | 2022 |
| HARLEY-DAVIDSON FLTRXSE | 2022 |
| HARLEY-DAVIDSON FLTRXST | 2022 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.