Volvo bulletin 37299
What it saysThis a Technical Journal plus 1 mp4 file If a customer experiences noise from the rear of the vehicle, often generated at low speeds and during cold climate conditions (listen to the attached file TJ_37299_1.mp4 as… NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Feb 4, 2026, received Apr 9, 2025, about the power train — 2 documents under this number. It names 9 model years (2024–2026). 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 a Technical Journal plus 1 mp4 file If a customer experiences noise from the rear of the vehicle, often generated at low speeds and during cold climate conditions (listen to the attached file TJ_37299_1.mp4 as a reference), please follow the advice under "Service". Note! Do not replace any parts, as this will not solve the issue. Analysis is ongoing, and this journal will be updated accordingly. *The estimated timeline for the solution is during quarter 3 of 2026.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37299 | Service bulletin | Feb 4, 2026 | 11029172 | |
| 37299 | Service bulletin | Mar 14, 2025 | 11016898 |
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; 2024 Volvo Duplicate C40BEV; 2025 Volvo Duplicate C40BEV.
A 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 44 complaints with NHTSA since 2015. 1 of them name Power Train — 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.
1st incident vehicle lost power while operating. No way to operate hazard lights, steering and control goes dead and wipers come on continuously. 2nd incident car was returned from dealership. 15 minutes into the drive on a busy highway in Minneapolis car began to replicate similar issues.
2025 Volvo EX40 · Power Train · filed with NHTSA Sep 25, 2025 · ODI 11689800
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 power train
Source: same model, same component group21 other manufacturer communications filed against these Volvo models under the same component group (power train), newest first. The eight newest are listed; the rest are on the Volvo list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 37504.3.0 | Service bulletin | Sep 19, 2026 | This is a TJ Text Only no attachment If a customer experiences a DIM message stating "Propulsion Service Required" and IEM P0A7A48 is stored… |
| 36774.4.0 | Service bulletin | Sep 17, 2026 | This is a Technical Journal: Text plus 1 PDF -- DTC TCM P277C07 set. If the TCM DTC listed below is set, A new transmission hardware solutio… |
| 36774.3.0 | Service bulletin | Jun 10, 2026 | This is a Technical Journal: DTC TCM P277C07 set. If the TCM DTC listed below is set, A new transmission hardware solution has been introduc… |
| 36496.10.0 | Service bulletin | May 7, 2026 | This is a Technical Journal: Intermittent knocking noise during acceleration. If the sound corresponds to attached sound file, change front… |
| 37504 | Service bulletin | Dec 20, 2025 | This is a TJ Text Only no attachment If a customer experiences a DIM message stating "Propulsion Service Required" and IEM P0A7A48 is stored… |
| 37228 | Service bulletin | Dec 20, 2025 | This is a Technical Journal: Vehicle jerks in low speed when Start/Stop is active. Improved software is introduced from version 3.5.14. |
| 35732 | Service bulletin | Mar 14, 2025 | This is a Technical Journal: Clicking sound from transmission area. This is considered a normal operating characteristic/function of the ve… |
| 36989 | Service bulletin | Mar 11, 2025 | This is a Technical Journal: Vehicle jerks and TCM DTC P071164 set. A software solution is introduced from version 3.4.4. |
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 37299 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 37299 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 37299 cover?
The manufacturer filed it against 9 model years: 2024 Volvo C40, 2025 Volvo EC40, 2025 Volvo EX40, 2026 Volvo XC40, 2025 Volvo XC40, 2024 Volvo XC40 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.