October 26, 2022 Service bulletin

Touring and trike rear brake switch

Harley-Davidson technical service bulletin M1557 for 2022 Harley-Davidson FLHX, 2022 Harley-Davidson Flhtk and 2022 Harley-Davidson FLHR and others.

Bulletin number: M1557
Component: Exterior lighting
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. NOTE: For information regarding brake switch signal changes on 2019 to 2022 Trike/CVO Trike and 2020 to 2022 Touring/Police Touring/CVO Touring vehicles built prior to the Vehicle Identification Numbers (VINs) noted in bulletin M1557, see Service Bulletin M1568: Recall 0635.

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