# Service bulletin 26\-037

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: 10185190
- Published by NHTSA: 2021\-01\-06
- Manufacturer's number: 26\-037
- Manufacturer's date: 2020\-12\-18
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY

## NHTSA's summary

Fix\-As\-Fail \- Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator \(LCA\) fault codes leading to possible LCA hardware replacement.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185190-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185190-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Transmission and driveline, Software

## Vehicles listed

- 2012 to 2016 KENWORTH 963
- 2012 to 2019 KENWORTH C500
- 2012 to 2016 KENWORTH C540
- 2012 to 2016 KENWORTH C550
- 2016 KENWORTH K170
- 2012 to 2018 KENWORTH K270
- 2012 to 2016 KENWORTH K300
- 2012 to 2018 KENWORTH K370
- 2012 KENWORTH K500
- 2012 to 2020 KENWORTH T170
- 2012 KENWORTH T2000
- 2012 to 2020 KENWORTH T270
- 2012 to 2021 KENWORTH T370
- 2013 to 2015 KENWORTH T400
- 2012 to 2020 KENWORTH T440
- 2012 to 2017 KENWORTH T470
- 2020 KENWORTH T470
- 2013 KENWORTH T600
- 2017 to 2019 KENWORTH T600
- 2012 to 2019 KENWORTH T660
- 2012 to 2021 KENWORTH T680
- 2012 to 2014 KENWORTH T700
- 2012 to 2020 KENWORTH T800
- 2021 KENWORTH T800B
- 2012 to 2021 KENWORTH T880
- 2012 to 2021 KENWORTH W900
- 2017 to 2021 PETERBILT 567
- 2018 to 2021 PETERBILT 579

## Recalls for the same vehicles and component

- [24V915000](/recalls/nhtsa/24V915000.md), 2024-12-09: ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [21V906000](/recalls/nhtsa/21V906000.md), 2021-11-19: ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, AIR
- [13V027000](/recalls/nhtsa/13V027000.md), 2013-01-25: ELECTRICAL SYSTEM:SOFTWARE; SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM

## Other bulletins for the same vehicles and component

- [T010](/bulletins/10185188.md), 2021-01-06, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. Non\-Safety Campaign – Vehicles with PACCAR transmissions may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Transmission software and shift calibration updates are available to resolve
- [03\-071](/bulletins/10169787.md), 2020-01-04, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Information Only \- Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
- [03\-070](/bulletins/10161168.md), 2019-06-11, Service bulletin: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY. Fix as Fail: Vehicles built 11/30/15 to 7/18/16 may display an error message in the Service Advised display after updating CECU software.
- [13\-049](/bulletins/10154733.md), 2019-03-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Information: Bendix ACOM Software version 6.16.5.0 for diagnostics may introduce an unrecoverable error. Notice to dealers to replace this version with older software version until Bendix introduces new version.
- [TIB34\-073](/bulletins/10154342.md), 2019-03-11, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Fix\-As\-Fail: Vehicles equipped with VECU may activate frequently when LVD is enabled. Resolution is to update the CECU software.
- [99\-034](/bulletins/10136230.md), 2018-05-07, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. Information Only \- CECU/VECU unable to communicate with ESA requires use of a Y\-cable.
- [9162](/bulletins/10119761.md), 2017-10-21, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Non\-Safety Campaign: The Peterbilt SmartAir No Idle System may shut down during use. A software issue, corrected by replacing the control panel, has been identified as the source of this issue.
- [51012](/bulletins/10119760.md), 2017-10-21, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Fix\-as\-Fail: CECU3 software P30\-1011\-139 software has been released. This software update is not mandatory. This software requires MY2017 PCC software when installed on MY2015/2016 vehicles equipped with PCC.
- [01069](/bulletins/10119756.md), 2017-10-21, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Non\-Safety Campaign: The Kenworth Idle Management System \(KIMS\) may shut down during use. A software issue, corrected by replacing the control panel, has been identified as the source of this issue.
- [51\-007](/bulletins/10092223.md), 2017-02-18, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. FIX\-AS\-REQUESTED \- NAV\+ HD SOFTWARE UPDATE FOR RANDOM REBOOT FIX AND MP3 FEATURES ENABLED.

JSON: [/v1/bulletins/10185190](/v1/bulletins/10185190)

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