Volvo bulletin 37618.3.8
What it saysThis is a TJ - Text - plus 2 instruction documents (TJI's) - + 1 PDF + how to find structure week + flow chart, 2 JPG's . NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Sep 9, 2026, received Oct 5, 2026. It names 31 model years (2022–2026). 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 TJ - Text - plus 2 instruction documents (TJI's) - + 1 PDF + how to find structure week + flow chart, 2 JPG's . If the Check Engine Light is on in the DIM and one or more of the DTCs listed below are set, please follow the advice under "Service". 7 attachments How to find Structure Week and Engine Serial Number.jpg0.2454 MB One Time Use Fasteners 1.jpg0.0362 MB One Time Use Fasteners 2.jpg0.3828 MB TJ 37618 Flow Chart.jpg0.5552 MB TJI-531608-1_1_7_en-US.pdf3.6363 MB TJI-531608-2_1_7_en-US.pdf3.3618 MB TJ_37618_2.pdf
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37618.3.8 | Service bulletin | Sep 9, 2026 | 11037955 |
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 31 model years this bulletin names have filed 478 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 37618.3.8 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 37618.3.8 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 37618.3.8 cover?
The manufacturer filed it against 31 model years: 2025 Volvo S60, 2024 Volvo S60, 2023 Volvo S60, 2022 Volvo S60, 2026 Volvo S90, 2025 Volvo S90 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.