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September 5, 2024 Service bulletin

Skyline os universal software update

Harley-Davidson technical service bulletin M1635 for 2024 Harley-Davidson FLHX, 2024 Harley-Davidson Fltrx and 2023-2024 Harley-Davidson Flhxse and others.

Bulletin number
M1635
Component
Electrical system
Summary
SERVICE BULLETIN M1635 (REV C): SKYLINE OS UNIVERSAL SOFTWARE UPDATE. PURPOSE: Revision C. Added: Notes confirming latest software version before and after update. No warranty coverage for reinstallation of software or updating Parts and Accessories (P&A) amp. Updated: Purpose for Service Bulletin, Part Numbers and Required Dealer Action. This bulletin informs dealers that there is a Skyline™ OS software update for the 2023 and 2024 Touring vehicles equipped with an IFCU. This software update (240002237D) will bring 2023 and 2024 IFCU equipped vehicles to the same software version. The software update will also address a series of bugs within 2023 vehicles equipped with the Skyline™ OS. This update should be applied to all current software versions: 240001467D, 240002100D and 240002111D. This is a multi-step software update that also contains the latest Amplifier software (1.3.8.0).

Owners of these vehicles have filed 14 complaints in the electrical category.

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