Technical Service Bulletin M1557 — 2022 HARLEY-DAVIDSON FLHXST
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | M1557 |
| Manufacturer | |
| Vehicle | 2022 HARLEY-DAVIDSON FLHXST |
| Component | ELECTRICAL SYSTEM |
| Communication Date |
Bulletin 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.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.