# Service campaign FS015

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 campaign
- NHTSA id: 11028312
- Published by NHTSA: 2026\-02\-05
- Manufacturer's number: FS015
- Manufacturer's date: 2026\-01\-29
- Campaign id or software version: FS015
- NHTSA component: POWER TRAIN

## NHTSA's summary

TX\-12 MTM Loose Cap Screw Update The chassis list was updated to indicate T680 or T680 Next Gen. SRT codes B25\-28A and B25\-28B apply to T680 Next Gen chassis.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028312-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028312-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2022 to 2023 KENWORTH T680

## Recalls for the same vehicles and component

- [24V190000](/recalls/nhtsa/24V190000.md), 2024-03-20: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
- [2024161](/recalls/tc/2024161.md), 2024-03-08: Powertrain
- [2021069](/recalls/tc/2021069.md), 2021-02-17: Powertrain

## Other bulletins for the same vehicles and component

- [CE019](/bulletins/11034284.md), 2026-07-02, Service bulletin: ENGINE; POWER TRAIN. Multiple fuel injector part numbers have been added to this warranty policy.
- [CE033](/bulletins/11034281.md), 2026-07-02, Warranty extension: ENGINE; POWER TRAIN. "KW \& PB 14 fuel injector part numbers \(seven for MX\-11 and seven for MX\-13 engines\) have been added to this warranty policy."
- [CE019](/bulletins/11034063.md), 2026-06-25, Service bulletin: POWER TRAIN; ENGINE. Multiple fuel injector part numbers have been added to this warranty policy.
- [CE033](/bulletins/11034060.md), 2026-06-25, Service bulletin: POWER TRAIN; ENGINE. "KW \& PB 14 fuel injector part numbers \(seven for MX\-11 and seven for MX\-13 engines\) have been added to this warranty policy."
- [CE031](/bulletins/11034059.md), 2026-06-25, Warranty extension: ENGINE; POWER TRAIN. "KW \& PB 14 fuel injector part numbers \(seven for MX\-11 and seven for MX\-13 engines\) have been added to this warranty policy."
- [FS016](/bulletins/11028315.md), 2026-02-05, Service campaign: POWER TRAIN. Eaton Endurant MTM Loose Cap Screw Update The chassis list was updated to indicate T680 or T680 Next Gen. SRT codes B25\-29A and B25\-29B apply to all T680 chassis..
- [24PBE\_24KWE](/bulletins/11028308.md), 2026-02-05, Warranty extension: POWER TRAIN; ELECTRICAL SYSTEM. 24PBE\_24KWE RH Shift Stalk Update Warranty section has been updated with revised verbiage for picture requirements.
- [24PBE/KWE](/bulletins/11027063.md), 2026-01-06, Warranty extension: POWER TRAIN; ELECTRICAL SYSTEM. The right\-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right\-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [FS016](/bulletins/11026429.md), 2025-12-05, Service campaign: POWER TRAIN. Campaign Certain chassis equipped with an Eaton Endurant 12\-speed transmission have Mechatronic Transmission Module \(MTM\) rail cylinder cap screws that could become loose. This may cause the transmission not to shift and the transmission service lamp to illuminate. Repair procedure is now available.
- [FS015](/bulletins/11026419.md), 2025-12-05, Service bulletin: POWER TRAIN. Certain chassis equipped with a PACCAR TX\-12 transmission have Mechatronic Transmission Module \(MTM\) rail cylinder cap screws that could become loose. This may cause the transmission not to shift and the transmission service lamp to illuminate.

JSON: [/v1/bulletins/11028312](/v1/bulletins/11028312)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20campaign%20FS015&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11028312&vehicle=Service%20campaign%20FS015)