2011 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.

• Sep 11, 2026 Service bulletinKenworth: Dealers should check the chassis list and SIR weekly for VIN changes
• Apr 9, 2024 Service bulletinCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air...
• Feb 24, 2023 Service bulletinCertain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual...
• Jun 14, 2021 Service bulletinInformation Only – C hassis equipped with MY2021 B EPA emission s standards will be shipped through...
• 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
• Jun 8, 2020 Service bulletinInformation Only:
• 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 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 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.
• Apr 6, 2018 Service bulletinInformation only
• Sep 27, 2017 Service bulletinFix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
• Nov 4, 2016 Service bulletinFix-as-fail: an internal issue may cause some HVAC mode door actuators to fail
• Jul 7, 2016 Service bulletinT680 predictive cruise control(PCC) incompatibility with cummins engine.
• Feb 9, 2015 Service bulletinTech Tip concerning Pushbutton Shift Selector on Kenworth and Peterbilt Trucks will skip the oil level...