2018 Kenworth T680 Technical Service Bulletins

75 technical service bulletins (TSBs) are on record for the 2018 Kenworth T680. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10168709Nov 21, 2019Engine cooling. Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine. An improved suction line has been released that removes stress transferred to the evaporator core.
• 10168703Nov 6, 2019Engine cooling. Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
• 10165583Sep 27, 2019Engine cooling, Equipment. Information Only – This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
• 10164403Aug 30, 2019Steering. MY2018 QV/VV Retrofit
• 10164402Aug 30, 2019Fuel system. Fix-As-Fail - Nylon fuel lines may be too short, potentially resulting in a cracked or loose, low pressure fuel fitting at the engine or fuel tank, which may introduce air into the fuel system resulting in a hard-to-start or no-start condition.
• 10164378Aug 28, 2019Engine cooling. Fix-As-Fail -“ Composite fittings used in the cooling system may crack, resulting in coolant leaks. Brass fittings are available to replace the composite fittings.
• 10164375Aug 23, 2019Engine cooling. Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.
• 10164369Aug 2, 2019Equipment. Fix as Fail HVAC system may demonstrate inadequate temperature control, be stuck in defrost mode, or have intermittent changes in fan speed that can be remedied with an updated HVAC software.
• 10163419Jul 22, 2019Transmission and drivetrain. Fix as Fail: Vehicles with Eaton Ultrashift Plus or Fuller Advantage Automated transmissions may display fault codes and/or have clutch release problems due to broken clutch levers. Resolution is to replace the clutch.
• 10159674Apr 8, 2019Equipment. Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
• 10154736Jan 11, 2019Equipment. Fix-As-Fail ? 2.1m Sunvisor clips may be cracked or broken.
• 10154344Dec 4, 2018Transmission and drivetrain. Campaign: The clutch may not shift appropriately or the clutch may not disengage due to lack of torque on the clutch bolts.
• 10144965Aug 28, 2018Transmission and drivetrain. Non-Safety Campaign - PTOs in certain T680/T880 chassis equipped with PACCAR or an Eaton Endurant Transmission may not contain the wiring required to activate the PTO accessory.
• 10144967Aug 8, 2018Body and structure. Non-Safety Campaign- JOST International has concluded a possibility exists that one production 5th wheel built with a prototype component was installed on a Kenworth chassis
• 10143637Jun 29, 2018Electrical system. Fix-As-Fail: Bendix Wingman radars with ice/snow buildup on the optional PACCAR radar cover may experience false warnings and mild brake applications from the Wingman System.
• 10143499Jun 29, 2018Equipment. Fix-As-Fail: Bendix Wingman radars with ice/snow buildup on the optional PACCAR radar cover may experience false warnings and mild brake applications from the Wingman System.
• 10143640Jun 14, 2018Equipment. Non-Safety Campaign- Incorrect GHG emissions identifier label for the tire classification listed on printed label.
• 10143502Jun 14, 2018Equipment, Tires. Non-Safety Campaign- Incorrect GHG emissions identifier label for the tire classification listed on printed label.
• 10138445Apr 6, 2018Electrical system. Information only - Customer installed inverters may be wired incorrectly.
• 10136230Mar 8, 2018Electrical system, Equipment. Information Only - CECU/VECU unable to communicate with ESA requires use of a Y-cable.
• 10128645Jan 17, 2018Electrical system. Fix-As-Fail ? Some vehicles may set a ?Cluster Not Detected? error message when connecting to the CECU with ESA.
• 10118724Sep 28, 2017Other or unknown, Electrical system. Non Safety Campaign: The circuit for the Trailer Hotline/Trailer Power may not be properly protected on Model T680/T880 vehicles equipped with this option.
• 10118722Sep 27, 2017Engine cooling. Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
• 10092241Nov 4, 2016Equipment. Fix-as-fail: an internal issue may cause some hvac mode door actuators to fail. This will cause the hvac system to act erratically or constantly turn on and off.
• 10186164Jul 7, 2016Equipment. T680 predictive cruise control(PCC) incompatibility with cummins engine.

← All problems reported for the 2018 Kenworth T680