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March 16, 2022 Service bulletin

Low/no charging diagnostics.

Harley-Davidson technical service bulletin M1507 for 2017-2019 Harley-Davidson Flhtcu, 2017-2021 Harley-Davidson FLHX and 2017-2021 Harley-Davidson Flhtk and others.

Bulletin number
M1507
Component
Electrical system
Summary
SERVICE BULLETIN M1507: LOW/NO CHARGING DIAGNOSTICS. Revision. PURPOSE: To inform the dealers of updated and new symptom-based diagnostics for the low or no charging symptom on affected platforms. Required Dealer Action: Use the new diagnostics on all affected platforms. Replace the LOW OR NO CHARGING symptom based diagnostic in the electrical diagnostic manual with the updated and new sections.

Owners of these vehicles have filed 28 complaints in the electrical category.

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