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May 2, 2024 Service bulletin

Body control module (BCM) update: hard start in gear and ride mode fault

Harley-Davidson technical service bulletin M1644 for 2024 Harley-Davidson FLHX, 2024 Harley-Davidson Fltrx and 2023-2024 Harley-Davidson Flhxse and others.

Bulletin number
M1644 (V 16.3.8.2)
Component
Unknown or other
Summary
SERVICE BULLETIN M1644: BODY CONTROL MODULE (BCM) UPDATE: HARD START IN GEAR AND RIDE MODE FAULT. PURPOSE: This bulletin informs dealers that there is a Body Control Module (BCM) update available for: • 2023: CVO Street Glide (FLHXSE), CVO Road Glide(FLTRXSE) • 2024: Street Glide (FLHX), Road Glide (FLTRX), CVO Street Glide (FLHXSE), CVO Road Glide (FLTRXSE), CVO Road Glide ST (FLTRXSTSE) This update is to address a concern of Hard/No start while attempting to start a bike in gear while the clutch lever is pulled in. This update also addresses a Ride Mode fault after a quick ON/OFF/ON ignition cycle.

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