TSB 35976.4.0 — Volvo Service bulletin
35976.4.0 is a service bulletin on file with NHTSA for the Volvo XC90, 2023–2024 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This is a Technical Journal: 12V Critical Charge Message w/ MVBM-B166094 MVBM-B165F94 DTC's set. Do not replace the MVBM. Delete the DTC´s and perform a SW update. A new SW fix is planned 2024 quarter 1.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 35976.4.0 names
| Vehicle | Model years |
|---|---|
| Volvo XC90 | 2023, 2024 |
Every document filed under 35976.4.0
| Document ID | Filed | Type |
|---|---|---|
| 35976.4.0 | February 29, 2024 | Service bulletin |
What 35976.4.0 covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 35976.4.0?
35976.4.0 is a service bulletin filed with NHTSA by Volvo, covering the Volvo XC90 across the 2023–2024 model years. NHTSA's summary reads: This is a Technical Journal: 12V Critical Charge Message w/ MVBM-B166094 MVBM-B165F94 DTC's set. Do not replace the MVBM. Delete the DTC´s and perform a SW update. A new SW fix is planned 2024 quarter 1.
Which vehicles does 35976.4.0 cover?
NHTSA's file names Volvo XC90 (2023–2024). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 35976.4.0 a recall, and is the repair free?
No. 35976.4.0 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 35976.4.0?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 35976.4.0, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 35976.4.0. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.