Subaru bulletin 14-28-21R
What it saysThis Service Information Bulletin announces the new control module software reprogramming procedures for 2022MY and later BRZ models. NHTSA’s full summary ↓
Subaru filed this with NHTSA as a service bulletin dated Jul 8, 2024, received Jun 5, 2023, about the electrical system — 3 documents under this number. It names 6 model years (2022–2024). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Service Information Bulletin announces the new control module software reprogramming procedures for 2022MY and later BRZ models.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 14-28-21R | Service bulletin | Jul 8, 2024 | 11005590 | PDF, 2,500 KB |
| 14-28-21R | Service bulletin | Jun 6, 2023 | 10238452 | PDF, 2,500 KB |
| 14-28-21R | Service bulletin | May 25, 2023 | 10237298 | PDF, 2,500 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.
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.
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Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 6 model years this bulletin names have filed 306 complaints with NHTSA since 2015. 29 of them name Electrical System, Engine — 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.
The infotainment system and Apple CarPlay connectivity is posing a safety hazard. When I’m on a phone call my audio will randomly cut out and suddenly the person on the other side of the call can no longer hear me. In order to fix the issue I must pick up my phone while I’m driving to disconnect from Apple CarPlay and reconnect.
2024 Subaru Crosstrek · Electrical System · filed with NHTSA May 9, 2024 · ODI 11587897
This is a new car. There’s was only 31 miles when I purchased. One day, there’s some sound when I driving the vehicle. Once I parked, all the warning lamps was on, then my car wasn’t able to move. When the incident happened, it was only 4 months of using it and only 5,498 miles.
2022 Subaru BRZ · Engine · filed with NHTSA Feb 20, 2023 · ODI 11508249
Found traces of silicone in my engine. Checked the dipstick out of curiosity and found silicone or RTV sealant. The car only has 500 miles on it. Will do oil change after break in period of Subaru’s recommended 1000 miles and will have them check the oil pan filter for more RTV…
2022 Subaru BRZ · Engine · filed with NHTSA Aug 7, 2022 · ODI 11477991
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 electrical system
Source: same model, same component group121 other manufacturer communications filed against these Subaru models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Subaru list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 07-244-26 | Service bulletin | Sep 29, 2026 | This Bulletin provides a repair procedure for increased dark current and unintended battery discharge that occurs in a small number of uniqu… |
| 18-244-26 | Service bulletin | Sep 18, 2026 | "This Bulletin announces additional troubleshooting steps for the following DTCs: DTC C1956: RH Actuator Circuit DTC C1957: LH Actuator Circ… |
| 15-333-25R | Service bulletin | Sep 14, 2026 | This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure… |
| 15-331-25R | Service bulletin | Sep 14, 2026 | This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concern… |
| 15-322-25R | Service bulletin | Sep 14, 2026 | In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen… |
| 15-304-22R | Service bulletin | Sep 14, 2026 | This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concern… |
| 12-258-25R | Service bulletin | Sep 4, 2026 | This bulletin provides additional examples, diagnostics tips and installation tips as helpful aids to be used when working with sunroof seal… |
| 15-343-26 | Service bulletin | Sep 1, 2026 | "This bulletin announces a design change to the cord assembly that connects the Center Infotainment Display (CID) to the CCU, addressing rep… |
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 14-28-21R 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 14-28-21R 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. Every Subaru warranty extension on file lists the ones Subaru has filed.
Which vehicles does 14-28-21R cover?
The manufacturer filed it against 6 model years: 2023 Subaru Ascent, 2022 Subaru BRZ, 2024 Subaru Crosstrek, 2024 Subaru Impreza, 2023 Subaru Legacy, 2023 Subaru Outback. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.