Harley-Davidson warranty extension M1555
Harley-Davidson filed this with NHTSA as a warranty extension dated Apr 18, 2025, received Oct 8, 2024, about the electrical system — 5 documents under this number. It names 392 model years (2016–2025). A warranty extension is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSERVICE BULLETIN M1555 (REV H): BATTERY WARRANTY GUIDELINES. PURPOSE: This bulletin informs the dealership network that Harley-Davidson has provided guidelines for battery warranty. REV H. Update section headers: AGM and Lithium-Iron Phosphate Batteries. Add graphics and callouts. Updated: Information on Battery.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| M1555 | Warranty extension | Apr 18, 2025 | 11018144 | not yet checked |
| M1555 | Service bulletin | Mar 1, 2025 | 11015434 | not yet checked |
| M1555 | Warranty extension | Nov 7, 2024 | 11010212 | not yet checked |
| M1555 | Warranty extension | Oct 9, 2024 | 11010215 | not yet checked |
| M1555 | Warranty extension | Sep 12, 2024 | 11008736 | not yet checked |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against: 2021 Harley-Davidson Duplicate PRODUCTRA1250; 2016 Harley-Davidson FLD; 2021 Harley-Davidson FLH; 2024 Harley-Davidson FLI; 2017 Harley-Davidson FLS; 2016 Harley-Davidson FLS103; 2017 Harley-Davidson Flde; 2018 Harley-Davidson Flde; 2019 Harley-Davidson Flde; 2020 Harley-Davidson Flde; 2018 Harley-Davidson Flfb; 2019 Harley-Davidson Flfb; 2025 Harley-Davidson Flfb; 2018 Harley-Davidson Flfbs; 2019 Harley-Davidson Flfbs; 2020 Harley-Davidson Flfbs; 2021 Harley-Davidson Flfbs; 2022 Harley-Davidson Flfbs; 2023 Harley-Davidson Flfbs; 2024 Harley-Davidson Flfbs; 2018 Harley-Davidson Flfbs ANV; 2018 Harley-Davidson Flfbs ANX; 2020 Harley-Davidson Flfbsanv; 2023 Harley-Davidson Flfbsanv; 2017 Harley-Davidson Flhc; 2018 Harley-Davidson Flhc; 2019 Harley-Davidson Flhc; 2020 Harley-Davidson Flhc; 2021 Harley-Davidson Flhc; 2025 Harley-Davidson Flhc; 2018 Harley-Davidson Flhcs; 2019 Harley-Davidson Flhcs; 2020 Harley-Davidson Flhcs; 2021 Harley-Davidson Flhcs; 2022 Harley-Davidson Flhcs; 2023 Harley-Davidson Flhcs; 2024 Harley-Davidson Flhcs; 2018 Harley-Davidson Flhcs ANV; 2023 Harley-Davidson Flhcs ANV; 2023 Harley-Davidson Flhfb; 2016 Harley-Davidson Flhp; 2017 Harley-Davidson Flhp; 2018 Harley-Davidson Flhp; 2019 Harley-Davidson Flhp; 2020 Harley-Davidson Flhp; 2021 Harley-Davidson Flhp; 2022 Harley-Davidson Flhp; 2023 Harley-Davidson Flhp; 2024 Harley-Davidson Flhp; 2025 Harley-Davidson Flhp; 2016 Harley-Davidson Flhr; 2017 Harley-Davidson Flhr; 2018 Harley-Davidson Flhr; 2019 Harley-Davidson Flhr; 2020 Harley-Davidson Flhr; 2021 Harley-Davidson Flhr; 2022 Harley-Davidson Flhr; 2017 Harley-Davidson Flhr / Road King; 2016 Harley-Davidson Flhrc; 2017 Harley-Davidson Flhrxs and 332 more.
None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.
Common questions
Source: NHTSA, 49 CFR 579.5Is Harley-Davidson M1555 a recall?
No. A warranty extension is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls.
Is the M1555 repair free?
A warranty extension is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does M1555 cover?
The manufacturer filed it against 392 model years: 2021 Harley-Davidson Duplicate PRODUCTRA1250, 2016 Harley-Davidson FLD, 2021 Harley-Davidson FLH, 2024 Harley-Davidson FLI, 2017 Harley-Davidson FLS, 2016 Harley-Davidson FLS103 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.