WenmarOpen by Wenmar Pro

Service bulletin TIB-E-110

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10056906
Published by NHTSA2015-03-11
Manufacturer's numberTIB-E-110
Manufacturer's date2015-02-17
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

KENWORTH: A NEW SOFTWARE IS AVAILABLE FOR THE DRIVER PERFORMANCE ASSISTANT (DPA) FOR RETROFITTING TRUCKS TO IMPROVE FUEL ECONOMY AND HAVE MAINTENANCE COSTS REDUCED. MODEL T680, 880. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Software

Vehicles listed
KENWORTH T6802015
KENWORTH T8802015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
26-0372021-01-06. Service bulletin. 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.
03-0712020-01-04. Service bulletin. 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.
03-0702019-06-11. Service bulletin. 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.
510122017-10-21. Service bulletin. 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.
51-0072017-02-18. Service bulletin. FIX-AS-REQUESTED - NAV+ HD SOFTWARE UPDATE FOR RANDOM REBOOT FIX AND MP3 FEATURES ENABLED.