Volvo bulletin 37451
What it saysThis is a Technical Journal: MVBM-U007700 set together with ECM-P0A7B68 at PDS. NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Jul 31, 2025, received Aug 18, 2025, about the electrical system. It names 12 model years (2025–2026). 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 Technical Journal: MVBM-U007700 set together with ECM-P0A7B68 at PDS. Delete the DTC´s. Do not reload MVBM software. IF the DTC´s comes back together with MIL check engine light, perform the MVBM software
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37451 | Service bulletin | Jul 31, 2025 | 11021941 |
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 12 model years this bulletin names have filed 105 complaints with NHTSA since 2015. 31 of them name Electrical System — 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.
While my own 2026 Volvo EX90 was in for warranty repair (air conditioning compressor failure, believed related to a recent over-the-air software update), the dealership provided me with a loaner vehicle that exhibits its own intermittent climate control malfunction: the air conditioning shuts off completely when the vehicle comes to a…
2026 Volvo XC90 · Electrical System · filed with NHTSA Aug 28, 2026 · ODI 11760350
In the four months that I have owned this car, the following issues have occurred and have not been resolved: - Google Maps suddenly stopped working while navigating while I was driving on multiple occasions. - Bluetooth connectivity will disconnect suddenly and not reconnect - All audio in the car has stopped since 7/2/26.
2025 Volvo XC60 · Electrical System · filed with NHTSA Jul 6, 2026 · ODI 11748541
My car randomly has a battery charging fault. An alert stating “stop safely 12V battery critical charging fault” will just pop up while driving and then put the vehicle in turtle mode. This is an intermittent fault and is likely a false indication. This could cause an accident because it causes the car to slow down.
2025 Volvo XC40 · Electrical System · filed with NHTSA Jan 27, 2026 · ODI 11713785
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 electrical system
Source: same model, same component group90 other manufacturer communications filed against these Volvo models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Volvo list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 37373.8.0 | Service bulletin | Jul 28, 2026 | This is a Technical Journal: DIM Message and DTC BECM P0C7800. If the DIM displays a message stating "Drive System Service Required" and the… |
| 36863.4.0 | Service bulletin | Jul 28, 2026 | This is a Technical Journal: DIM Message and DTC IEM P0C0500. 1. Erase the DTC 2. Test drive the vehicle in electrical mode and accelerate u… |
| 37373.7.0 | Service bulletin | May 22, 2026 | This is a Technical Journal: DIM Message and DTC BECM P0C7800. If the DIM displays a message stating "Drive System Service Required" and th… |
| 37103.6.0 | Service bulletin | May 13, 2026 | This is a Technical Journal: Check Engine Light/DIM message and ISGM DTC P056200 or in combination with all the DTCs |
| 34295.9.0 | Service bulletin | Mar 10, 2026 | This is a Technical Journal: Text plus 2 attachments 1 PDF and 1 PNG - High Voltage Battery repairs. Always repair the battery according to… |
| 37103.4.0 | Service bulletin | Mar 7, 2026 | This is a Technical Journal: Check Engine Light/DIM message and ISGM DTC P056200 or in combination with all the DTCs |
| 37376.3.0 | Service bulletin | Mar 4, 2026 | This is a Technical Journal: Propulsion Message with DTC BECM P0A9500 and/or P0E2F00. Check the following parameters below. Utilize the High… |
| 37474 | Service bulletin | Feb 3, 2026 | This is a Technical Journal: DC Charging Power Limited to 150 kW. Vehicles equipped with the large HBAT27 (82?kWh) battery are capable of DC… |
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 37451 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 37451 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 37451 cover?
The manufacturer filed it against 12 model years: 2025 Volvo S60, 2026 Volvo S90, 2025 Volvo S90, 2026 Volvo V60, 2025 Volvo V60, 2025 Volvo V90 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.