2017 Kenworth T680 technical service bulletins

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

• Nov 4, 2026 Service bulletinThe new 2.1m day cab lift tools, a Level 3 mandatory tool, are now available to order.
• Sep 11, 2026 Service bulletinKenworth: Dealers should check the chassis list and SIR weekly for VIN changes
• Sep 5, 2026 Service bulletinAn exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines.
• Jul 10, 2026 Service bulletinThe Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to...
• Jul 3, 2026 Service bulletinUpdated Eaton's TAIB0885EN Bulletin link.
• May 6, 2026 Service bulletinTroubleshooting procedures for 2.1m cab power windows are now available.
• Apr 17, 2026 Service bulletinThe attached procedures document has been updated with more detail and explanations
• Apr 16, 2026 Service bulletinBogie Crossmember Torque Value Update
• Apr 1, 2026 EmissionsEPA17-24 mx
• Mar 21, 2026 EmissionsCARB Chassis Update
• Mar 6, 2026 EmissionsEPA17-24 MX-13
• Jan 31, 2026 Service bulletinProcedure pictures updated for clarity
• Apr 9, 2024 Service bulletinCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air...
• Oct 18, 2023 Service bulletinE304: PACCAR MX-11 and MX-13 EMY2016 NOx and N2O Exceedance Emissions Recall Certain vehicles with PACCAR...
• Jun 9, 2023 Service bulletinEmissions Recall Certain Vehicle Model Year 2017-2019 chassis equipped with EPA2017 compliant PACCAR MX-13...
• Jun 2, 2023 Service bulletinCertain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins...
• Jun 1, 2023 Service bulletinE279: paccar MX-13/MX-11
• Feb 24, 2023 Service bulletinCertain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual...
• Oct 18, 2022 Service bulletinInfo Only
• Aug 3, 2022 Service bulletinKenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid...
• Feb 4, 2022 Service bulletinDue to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet...
• Nov 9, 2021 Service bulletinNon-Safety Campaign
• Sep 21, 2021 Service bulletinFix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are...
• Jun 14, 2021 Service bulletinInformation Only – C hassis equipped with MY2021 B EPA emission s standards will be shipped through...
• Jun 8, 2021 Service bulletinAn engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD...
• May 25, 2021 Service bulletinSelected engines have been identified to receive a camshaft inspection and an update for improved camshaft...
• Feb 25, 2021 Service bulletinNon-Safety Campaign – The batteries may drain quickly due to the VECU not going to sleep
• Feb 25, 2021 Service bulletinNon-Safety Campaign – Chassis with the City Horn option may generate unexpected alerts
• Feb 10, 2021 Service bulletinInformation Only – Windshield washer pumps have a high No Trouble Found rate
• Dec 18, 2020 Service bulletinNon-Safety Campaign – Vehicles with PACCAR transmissions may experience transmission service lamp...
• Dec 18, 2020 Service bulletinNon-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience...
• Dec 18, 2020 Service bulletinFix-As-Fail
• Oct 12, 2020 Service bulletinFix-As-Fail – The Battery Management System (BMS) may report the incorrect battery condition
• Aug 26, 2020 Service bulletinFix-As-Fail – The Master Switch Module (MSM) may lose dash switch memory and functionality when the...
• Jul 29, 2020 Service bulletinFix-As-Fail
• Jun 8, 2020 Service bulletinInformation Only:
• Mar 27, 2020 Service bulletinDEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank...
• Mar 17, 2020 Service bulletinInformation Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment...
• Mar 3, 2020 Service bulletinInformation Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed,...
• Jan 3, 2020 Service bulletinInformation Only: The AutoStart System Test does not recognize the hood opening and closing when running...
• Dec 19, 2019 Service bulletinEmissions Campaign – The Engine Overspeed lamp may illuminate during a smoke opacity test
• Dec 18, 2019 Service bulletinInformation Only
• Nov 21, 2019 Service bulletinFix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine
• Nov 6, 2019 Service bulletinInformation Only:
• Sep 27, 2019 Service bulletinInformation Only –
• Aug 30, 2019 Service bulletinFix-As-Fail
• Aug 30, 2019 Service bulletinMY2018 qv/vv
• Aug 28, 2019 Service bulletinFix-As-Fail -“ Composite fittings used in the cooling system may crack, resulting in coolant leaks
• Aug 23, 2019 Service bulletinFix-As-Fail: Two separate causes have been identified as root
• Aug 2, 2019 Service bulletinFix as Fail HVAC system may demonstrate inadequate temperature control, be stuck in defrost mode, or have...
• Apr 8, 2019 Service bulletinInformation Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
• Nov 6, 2018 Service bulletinInformation: J1939 CAN BUS Best Practices
• Oct 8, 2018 Service bulletinNon-Safety Campaign: vehicles built between February 01, 2017 and April 03, 2017, were built with a...
• Jun 29, 2018 Service bulletinFix-As-Fail: Bendix Wingman radars with ice/snow buildup on the optional PACCAR radar cover may experience...
• Apr 6, 2018 Service bulletinInformation only
• Mar 23, 2018 Service bulletinFix-As-Fail ? The washer reservoir may leak due to interference with the top drivers-side fan ring support...
• Mar 6, 2018 Service bulletinFix-As-Fail ? Repair procedure for DTCs U1120 and/or U17C5 with WABCO Q27-6075-130 ABS ECU.
• Mar 2, 2018 Service bulletinNon-Safety Campaign
• Jan 22, 2018 Service bulletinFix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.
• Jan 17, 2018 Service bulletinFix-As-Fail ? Some vehicles may set a ?Cluster Not Detected? error message when connecting to the CECU...
• Jan 9, 2018 Service bulletinCampaign ? The lower elbow of the exhaust system does not have a drain hole, allowing water to collect in...
• Dec 13, 2017 Service bulletinInformational Only
• Nov 20, 2017 Service bulletinInformational Only ? False Fault Codes may become active with column mounted shifter and Eaton Automated...
• Sep 28, 2017 Service bulletinNon Safety Campaign: The circuit for the Trailer Hotline/Trailer Power may not be properly protected on...
• Sep 27, 2017 Service bulletinFix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
• Jun 30, 2017 Service bulletinNon-Safety Campaign: The Kenworth Idle Management System (KIMS) may shut down during use
• Mar 9, 2017 Service bulletinFix-as-fail: kenworth T680/T880 HVAC panel and temperature mode doors not functioning properly
• Nov 4, 2016 Service bulletinFix-as-fail: an internal issue may cause some HVAC mode door actuators to fail
• Sep 30, 2016 Service bulletinIncorrectly sized bolts may allow the venturri support bracket to vibrate.
• Sep 22, 2016 Service bulletinSleeper roof panels separating.
• Aug 8, 2016 Service bulletinNon-safety campaign
• Jul 28, 2016 Service bulletinNon-safety campaign - interaxle drivelines and yokes were installed that are not maintenance free
• Jul 28, 2016 Service bulletinFix-as-fail - engine over-speed lamp could come on after a downshift with the eaton ultrashift plus...
• Jul 28, 2016 Service bulletinEaton ultrashift plus excessive engine over-speed lamp on.
• Jul 7, 2016 Service bulletinNon-safety campaign - incorrect predictive cruise control (PCC) speed signal on cummins equipped T680...
• Jul 7, 2016 Service bulletinNon-safety campaign - possible assembly and programming issues with the pcc system may reduce the fuel...
• Jul 7, 2016 Service bulletinT680 predictive cruise control(PCC) incompatibility with cummins engine.
• Jul 7, 2016 Service bulletinPredictive Cruise control (PCC) incomplete assembly and programming.