# Service bulletin 37228

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11027191
- Published by NHTSA: 2026\-01\-07
- Manufacturer's number: 37228
- Manufacturer's date: 2025\-12\-20
- NHTSA component: POWER TRAIN

## NHTSA's summary

This is a Technical Journal: Vehicle jerks in low speed when Start/Stop is active. Improved software is introduced from version 3.5.14.\&\#13;

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11027191-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11027191-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2024 to 2025 VOLVO S60PHEV
- 2024 to 2026 VOLVO S90MHEV
- 2024 to 2026 VOLVO V60CCMHEV
- 2025 to 2026 VOLVO XC40MHEV
- 2024 to 2026 VOLVO XC60MHEV
- 2024 to 2026 VOLVO XC90MHEV

## Other bulletins for the same vehicles and component

- [36774.4.0](/bulletins/11037965.md), 2026-10-05, Service bulletin: POWER TRAIN. 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 solution has been introduced starting from transmission serial number 25M8L30144, which serves as a defined break point for updated production. \*If the DTC is confirmed and the transmission serial number is after the break point: Do NOT replace the transmission follow the advise under "Service".
- [36774.3.0](/bulletins/11034990.md), 2026-07-14, Service bulletin: POWER TRAIN. This is a Technical Journal: DTC TCM P277C07 set. If the TCM DTC listed below is set, A new transmission hardware solution has been introduced starting from transmission serial number 25M8L30144, which serves as a defined break point for updated production. \*If the DTC is confirmed and the transmission serial number is after the break point: Do NOT replace the transmission follow the advise under "Service".
- [36496.10.0](/bulletins/11033734.md), 2026-06-08, Service bulletin: POWER TRAIN. This is a Technical Journal: Intermittent knocking noise during acceleration. If the sound corresponds to attached sound file, change front drive shafts to the below part numbers.
- [37299](/bulletins/11029172.md), 2026-03-02, Service bulletin: POWER TRAIN. This 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.\&\#13; Analysis is ongoing, and this journal will be updated accordingly.\&\#13; \*The estimated timeline for the solution is during quarter 3 of 2026.
- [36814](/bulletins/11020543.md), 2025-07-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Transmission Shifts From D or R to P Immediately After Starting. This symptom can occur if the driver changes the position of the gear shifter from P to D or R very quickly after starting the engine and the starting process is not completed. Inform the driver to pause briefly after starting the vehicle before shifting into D or R.
- [37228](/bulletins/11020538.md), 2025-07-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Vehicle jerks in low speed when Start/Stop is active. Improved software is introduced from version 3.5.14.\&\#13;
- [36814](/bulletins/11020524.md), 2025-07-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Transmission Shifts From D or R to P Immediately After Starting. This symptom can occur if the driver changes the position of the gear shifter from P to D or R very quickly after starting the engine and the starting process is not completed. Inform the driver to pause briefly after starting the vehicle before shifting into D or R.
- [35732](/bulletins/11016899.md), 2025-04-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Clicking sound from transmission area.\&\#13; This is considered a normal operating characteristic/function of the vehicle.\&\#13;
- [37299](/bulletins/11016898.md), 2025-04-09, Service bulletin: POWER TRAIN. This a Technical Journal: Noise from ERAD in Cold Climate Conditions. Analysis is ongoing, and this journal will be updated accordingly.
- [36989](/bulletins/11016890.md), 2025-04-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Vehicle jerks and TCM DTC P071164 set. A software solution is introduced from version 3.4.4.

JSON: [/v1/bulletins/11027191](/v1/bulletins/11027191)

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