Volvo bulletin 37774.1.0
What it saysThis is a TJ - Text plus 1 PDF attachment - f the headlamp horizontal light aim cannot be adjusted via the set screw, If the horizontal light aim cannot be adjusted because the cogwheel knob is broken, do not replace… NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Jul 28, 2026, received Aug 18, 2026, about the exterior lighting. It names 15 model years (2019–2026). 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 1 PDF attachment - f the headlamp horizontal light aim cannot be adjusted via the set screw, If the horizontal light aim cannot be adjusted because the cogwheel knob is broken, do not replace the entire headlamp. Instead, use the spare part kit part number 32476677 to replace the affected component, please follow the instructions under "Service".
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37774.1.0 | Service bulletin | Jul 28, 2026 | 11036257 |
What the document itself lists
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 32476677 | — | — |
Read by machine from the document NHTSA serves (3 pages), read Sep 30, 2026. A part number is shown only where it matches Volvo’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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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 15 model years this bulletin names have filed 116 complaints with NHTSA since 2015. 2 of them name Exterior Lighting — 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.
There has not been a specific incident yet, but I am very concerned about the lack of lighting in the dark when our vehicle is in reverse. It is very difficult to see when backing up - either to the sides (making it difficult to tell where the edge of the road is), or directly behind (making it difficult to see if we are about to collide…
2026 Volvo V60 · Exterior Lighting · filed with NHTSA May 14, 2026 · ODI 11737786
2019 Volvo S60 headlamp system malfunction alert headlights/foglights to blink or turn off when turning the vehicle at night. I keep my headlights on auto so they are on during the day and I have only seen the error at night
2019 Volvo S60 · Exterior Lighting · filed with NHTSA Sep 24, 2024 · ODI 11616189
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 exterior lighting
Source: same model, same component group9 other manufacturer communications filed against these Volvo models under the same component group (exterior lighting), newest first. The eight newest are listed; the rest are on the Volvo list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 37426.2.0 | Service bulletin | Sep 14, 2026 | This is a TJ Text only no attachments. --- If the crystal gear shift knob light stays illuminated after the vehicle is locked and is not in… |
| 37631.3.0 | Service bulletin | Jul 28, 2026 | This is a TJ - text only no attachments - If customer complains of a headlamp error message in DIM, in combination with any of the DTCs stat… |
| 34521.11.1 | Service bulletin | May 7, 2026 | This is a Technical Journal: Headlamp condensation inside lens - information/leak test. If the result is not ok (air leak), it is ok to repl… |
| 34521.10.0 | Service bulletin | Mar 21, 2026 | This is a Technical Journal: Headlamp condensation inside lens - information/leak test. If the result is not ok (air leak), it is ok to repl… |
| 34521 | Service bulletin | Dec 20, 2025 | This is a Technical Journal: Headlamp condensation inside lens - information/leak test. If the result is not ok (air leak), it is ok to repl… |
| 8501 | Service bulletin | Apr 10, 2025 | This is a Technical Journal: Remote connection, BOMGAR application. Before joining a remote session: •Connect a suitable battery maintainer… |
| 37235 | Service bulletin | Feb 28, 2025 | This is a Technical Journal: Changed front fog/cornering lights behavior. This logic of the cornering lights is now changed in the cars with… |
| 36784.1.0 | Service bulletin | Dec 22, 2023 | This is a Technical Journal: PAC - Low brightness image in lower-light environment. Perform a software total upgrade. |
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 37774.1.0 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 37774.1.0 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 37774.1.0 cover?
The manufacturer filed it against 15 model years: 2025 Volvo S60, 2024 Volvo S60, 2023 Volvo S60, 2022 Volvo S60, 2021 Volvo S60, 2020 Volvo S60 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.