Volvo bulletin 37446
What it saysThis is a Technical Journal: PDS Error 502 – Extra SW May Be Needed. NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Jul 18, 2025, received Aug 18, 2025, about the electrical system. It names 1 model year (2026). 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 is a Technical Journal: PDS Error 502 – Extra SW May Be Needed. If error 502 appears in VIDA when ordering PDS software, please perform an EVCC reload with the checkbox marked "YES" for new hardware. EVCC reload part number: 80012578
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37446 | Service bulletin | Jul 18, 2025 | 11021927 |
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 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 1 model year this bulletin names have filed 3 complaints with NHTSA since 2015.
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 group15 other manufacturer communications filed against the Volvo EX30 under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Volvo list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 37436.4.0 | Service bulletin | Sep 12, 2026 | This is a Technical Journal: Vehicle Fails to Charge on All AC and DC Chargers. Start fault tracing by checking the following: 1.The conditi… |
| 37435.2.0 | Service bulletin | Sep 12, 2026 | This is a Technical Journal: Vehicle Fails To Charge On Certain DC Chargers. Check if the vehicle's software is the latest version. If not t… |
| 37436 | Service bulletin | Dec 13, 2025 | This is a Technical Journal: Vehicle Fails to Charge on All AC and DC Chargers. Start fault tracing by checking the following: 1.The condit… |
| 37430 | Service bulletin | Jul 18, 2025 | This is a Technical Journal: No Start After Failed OTA Installation. Do not replace any parts. To recover the CEM, download SP 80026889, "O… |
| 37435 | Service bulletin | Jul 16, 2025 | This is a Technical Journal: Vehicle Fails To Charge On Certain DC Chargers. Check if the vehicle's software is the latest version. If not t… |
| 37324 | Service bulletin | Jun 13, 2025 | This is a Technical Journal: AC Charging Cable Failure Modes. Before replacing the cable, the fault needs to be verified at the workshop. |
| TJ31543 | Service bulletin | Oct 22, 2024 | THIS IS A TECHNICAL JOURNAL: THIS JOURNAL IS A GUIDE FOR PERFORMING SOFTWARE DOWNLOADS. SERVICE: *SEE GUIDE UPDATED OCT. 12, 2016 FOR RELEVA… |
| 36897 | Service bulletin | Oct 17, 2024 | This is a Technical Journal: Slow AC Charging (6 Amps). A workaround to avoid slow charging is to turn on the DHU setting "Charging ? Limit… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Volvo, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Volvo 37446 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 37446 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 37446 cover?
The manufacturer filed it against 1 model year: 2026 Volvo EX30. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.