Volvo bulletin 37935.2.0
What it saysThis is a TJ - Text only - no attachments - If the Check Engine Light is on, or there is a "Reduced Performance" message in the DIM, and the customer is experiencing a hesitation or jerk during acceleration with one… NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Sep 24, 2026, received Oct 5, 2026. It names 6 model years (2025–2027). 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 TJ - Text only - no attachments - If the Check Engine Light is on, or there is a "Reduced Performance" message in the DIM, and the customer is experiencing a hesitation or jerk during acceleration with one or more of the DTCs listed below set, Improved ECM (Engine Control Module) software has been released in version 5.2.16. please follow the advice under "Service".
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37935.2.0 | Service bulletin | Sep 24, 2026 | 11037972 |
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 6 model years this bulletin names have filed 90 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.
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 37935.2.0 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 37935.2.0 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 37935.2.0 cover?
The manufacturer filed it against 6 model years: 2027 Volvo XC60, 2026 Volvo XC60, 2025 Volvo XC60, 2027 Volvo XC90, 2026 Volvo XC90, 2025 Volvo XC90. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.