Volvo bulletin 37438.4.0
Volvo filed this with NHTSA as a service bulletin dated Mar 10, 2026, received Apr 7, 2026, about the unknown or other. It names 39 model years (2021–2026). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis is a Technical Journal - text plus 1 jpg : iCUP IHU - If, during a Software Download (SWDL) at the workshop, connected to VIDA, the CSD (Center Stack Display) turns black and the IHU (Infotainment Head Unit) becomes stuck in programming mode or is unresponsive, follow the advice under "Service". Follow the recommended procedure depending on the MY (Model Year) of the vehicle
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37438.4.0 | Service bulletin | Mar 10, 2026 | 11031100 | 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 model years this site has no page for: 2025 Volvo C40BEV.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Volvo 37438.4.0 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 37438.4.0 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 37438.4.0 cover?
The manufacturer filed it against 39 model years: 2024 Volvo C40, 2023 Volvo C40, 2022 Volvo C40, 2026 Volvo EC40, 2025 Volvo EC40, 2025 Volvo EX40 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.