Subaru bulletin 15-256-19R
What it saysThis bulletin provides information on a new reprogramming procedure (FOTA) to optimize the Harman Gen 3.1 Audio and Navigation head units (H/U) utilized in the models as listed above. NHTSA’s full summary ↓
Subaru filed this with NHTSA as a service bulletin dated Jul 10, 2025, received Feb 5, 2020, about the equipment — 6 documents under this number. It names 29 model years (2019–2025). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
Get the next Subaru bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis bulletin provides information on a new reprogramming procedure (FOTA) to optimize the Harman Gen 3.1 Audio and Navigation head units (H/U) utilized in the models as listed above. Firmware-over-the-air (FOTA) is a process by which remote devices can receive updates to their operating software.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 15-256-19R | Service bulletin | Jul 10, 2025 | 11021257 | PDF, 2,994 KB |
| 15-256-19R | Service bulletin | Aug 1, 2024 | 11006930 | PDF, 2,992 KB |
| 15-256-19R | Service bulletin | Mar 27, 2024 | 10252542 | PDF, 2,996 KB |
| 15-256-19R | Service bulletin | Jan 9, 2024 | 10249605 | PDF, 2,996 KB |
| 15-256-19R | Service bulletin | May 2, 2023 | 10237239 | PDF, 2,992 KB |
| 15-256-19R | Service bulletin | Jan 28, 2020 | 10171096 | not found |
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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
Find the navigational system(global positioning system) for the 2022 Ascent →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Model years it names
Source: as the manufacturer filed themAlso filed against model years this site has no page for: 2021 Subaru BRZ.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Email me new Subaru bulletins for one of these models
A weekly email, sent only in a week when Subaru files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 28 model years this bulletin names have filed 4,921 complaints with NHTSA since 2015. 1,112 of them name Electrical System — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2019 Subaru Outback, the 103 owners who gave an odometer reading for Electrical System reported it at a median of 13,563 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2019 Subaru Forester. While turning the vehicle, the entire electrical system shut off, including the power steering and emergency braking system. The contact was almost involved in a crash due to the failure. The contact pulled over, shut off the engine, and restarted the vehicle, but the electrical failures remained.
2019 Subaru Forester · Electrical System · filed with NHTSA Mar 25, 2019
The contact owns a 2022 Subaru Ascent. The contact received notification of NHTSA Campaign Number: 22V907000 (Electrical System). The local dealer was contacted; however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair.
2022 Subaru Ascent · Electrical System · filed with NHTSA Feb 9, 2023
While backing out of my garage, the radio unit froze making the backup screen inoperable. This is a brand new car with 200 miles on it. According to the dealer, they will have to replace the head unit. They were able to get the unit working, hopefully until the new head unit arrives, by physically disconnecting the car battery.
2019 Subaru Outback · Electrical System · filed with NHTSA Jun 6, 2019
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the equipment
Source: same model, same component group32 other manufacturer communications filed against these Subaru models under the same component group (equipment), newest first. The eight newest are listed; the rest are on the Subaru list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 12-249-23R | Service bulletin | May 13, 2026 | This bulletin announces the recommended cleaning procedures to followed when encountering vehicles with long time exposure to pollen on pain… |
| 15-130-08R | Service bulletin | Oct 29, 2025 | This bulletin details an important regulation issued by the National Highway Traffic Safety Administration (NHTSA) which impacts the way som… |
| 17-17-13R | Service bulletin | Jul 10, 2025 | NOTE: The Airbag systems used on previous and current WRX, STI and Tribeca models are NOT equipped with EDR functionality. This Bulletin p… |
| 03-91-23R | Service bulletin | Apr 23, 2024 | This bulletin announces the design change made to the front drive axle shaft assemblies to address cases of a clicking/cracking-type sound h… |
| FAQ 15-318-24R | Service bulletin | Apr 22, 2024 | T16 VoLTE Warranty Extension (15-318-24R) Frequently Asked Questions. |
| 09-118-24 | Service bulletin | Apr 4, 2024 | This bulletin the announces diagnostic procedures and availability of new Engine Control Module (ECM) reprogramming files to address DTC P24… |
| 09-80-21R | Service bulletin | Apr 1, 2024 | This bulletin announces availability of a new thermo control valve assembly. The new valve contains an enhanced stainless steel internal sha… |
| WRL-21R | Service bulletin | Mar 28, 2024 | Subaru of America, Inc. (Subaru) has initiated this safety recall for certain 2020 model year Ascent vehicles in which the front axle housin… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Subaru, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Subaru 15-256-19R a recall?
No. A service bulletin 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, or on its page here.
Is the 15-256-19R repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 15-256-19R cover?
The manufacturer filed it against 29 model years: 2022 Subaru Ascent, 2021 Subaru Ascent, 2020 Subaru Ascent, 2019 Subaru Ascent, 2020 Subaru BRZ, 2019 Subaru BRZ and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.