Harley-Davidson, Harley-Davidson/livewire and Livewire warranty extension M1555
What it saysM1555 (REV H): battery warranty guidelines. NHTSA’s full summary ↓
Harley-Davidson, Harley-Davidson/livewire and Livewire 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 403 model years across Harley-Davidson, Harley-Davidson/livewire and Livewire (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.
One page for every brand it was filed under. Each brand’s bulletins: Harley-Davidson · Harley-Davidson/livewire · Livewire.
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.
One of the 432 warranty extensions and special-coverage programs on file — every make, with the term each runs to.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| M1555 | Warranty extension | Apr 18, 2025 | 11018144 | PDF, 1,934 KB |
| M1555 | Service bulletin | Mar 1, 2025 | 11015434 | PDF, 1,106 KB |
| M1555 | Warranty extension | Nov 7, 2024 | 11010212 | PDF, 1,106 KB |
| M1555 | Warranty extension | Oct 9, 2024 | 11010215 | PDF, 1,106 KB |
| M1555 | Warranty extension | Sep 12, 2024 | 11008736 | PDF, 1,096 KB |
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 themHarley-Davidson 392 model years
Also filed against: 2021 Harley-Davidson Duplicate RA1250; 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.
Harley-Davidson/livewire 3 model years
Also filed against: 2020 Harley-Davidson/livewire ELW (livewire); 2021 Harley-Davidson/livewire Elw(livewire); 2022 Harley-Davidson/livewire Elw(livewire).
Livewire 8 model years
Also filed against: 2020 Livewire Livewire; 2021 Livewire Livewire ONE; 2022 Livewire Livewire ONE; 2023 Livewire Livewire ONE; 2024 Livewire Livewire ONE; 2023 Livewire S2 DEL MAR; 2024 Livewire S2 DEL MAR; 2024 Livewire S2 Mulholland.
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.
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Harley-Davidson, Harley-Davidson/livewire and Livewire, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Harley-Davidson, Harley-Davidson/livewire and Livewire 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 403 model years across 3 brands (Harley-Davidson, Harley-Davidson/livewire and Livewire): 2021 Harley-Davidson Duplicate RA1250, 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.