2017 Kenworth T680 TSBs
79 Technical Service Bulletins across 12 categories
Categories
Engine
21 bulletinsAn exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines.
EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX...
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engines.
EPA17-24 MX-13 Fuel Injector Connector - This bulletin has been revised to include EPA24 PACCAR MX-13 engines.
Procedure pictures updated for clarity.
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When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process but must be used alongside Cummins troubleshooting steps. Cummins Quickserve will reference this bulletin for fault codes 555 or 556.
E304: PACCAR MX-11 and MX-13 EMY2016 NOx and N2O Exceedance Emissions Recall Certain vehicles with PACCAR MX-11 and...
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MX-13 EMY2016 engines with less than 300,000 miles (482,803 km) have been shown, in testing, to exceed regulatory limits for NOx and N2O emissions. This bulletin now applies to both Canadian and U.S.-registered vehicles. Software is now available to remedy this emissions non-compliance. NOTE California-registered vehicles that received a letter must have the software updated AND California documentation completed regardless of vehicle mileage.
Emissions Recall Certain Vehicle Model Year 2017-2019 chassis equipped with EPA2017 compliant PACCAR MX-13 engines have...
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an EGR flex pipe that can develop cracks and leak untreated exhaust. The EGR Flex pipe will be replaced if it has a suspect part number.
Certain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins ISX12/ISX15/X15 engines...
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that had a previously failed DEF sensor and with DEF sensor software disabled due to industry DEF sensor shortages will now be able to receive a replacement DEF sensor, DEF tank heater coolant control valve, and re-enabled DEF diagnostic software. Please note that chassis equipped with PACCAR PX engines will be eligible for this repair at a future date when software is available.
E279: PACCAR MX-13/MX-11 Engine MY17 Software Incorrectly Sets DTC P1092 PACCAR MX-13/MX-11 Engine MY17 Software...
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Incorrectly Sets DTC P1092 Emission Recall - PACCAR MX-13/MX-11 MY2017 software incorrectly sets DTC P1092, which could result in reduced available engine torque and/or engine protection mode. An engine software update is available that corrects the issue.
Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may...
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display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with...
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Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to deliver secure software updates remotely. This will reduce downtime and save on maintenance costs for eligible vehicles.
Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to...
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provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system...
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software related issues.
Selected engines have been identified to receive a camshaft inspection and an update for improved camshaft lubrication.
T680 predictive cruise control(PCC) incompatibility with cummins engine.
Eaton ultrashift plus excessive engine over-speed lamp on.
Emissions Campaign The Engine Overspeed lamp may illuminate during a smoke opacity test.
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A software update is available to resolve the issue.
Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine.
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An improved suction line has been released that removes stress transferred to the evaporator core.
Fix-As-Fail - Nylon fuel lines may be too short, potentially resulting in a cracked or loose, low pressure fuel fitting...
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at the engine or fuel tank, which may introduce air into the fuel system resulting in a hard-to-start or no-start condition.
Fix-As-Fail - Composite fittings used in the cooling system may crack, resulting in coolant leaks.
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Brass fittings are available to replace the composite fittings.
Non-Safety Campaign: The Kenworth Idle Management System (KIMS) may shut down during use.
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A software issue, corrected by replacing the control panel, has been identified as the source of this issue.
FIX-AS-FAIL - ENGINE OVER-SPEED LAMP COULD COME ON AFTER A DOWNSHIFT WITH THE EATON ULTRASHIFT PLUS TRANSMISSION.
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THIS DOES NOT AFFECT THE FUNCTION OF THE VEHICLE.
Electrical
15 bulletinsNon-Safety Campaign - The TPMS ECU is not communicating properly with TPMS sensors.
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The result is a delay or failure of communication between the TPMS ECU and the TPMS sensors , causing inaccurate TPMS readings. A firmware update resolves the issue.
Fix-As-Fail Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available.
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As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue operation with a failed DEF sensor by disabling the DEF sensor diagnostics.
Information Only C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast ...
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the end of the 2021 calendar year without particulate matter (PM) sensors installed .
Non-Safety Campaign Chassis with the City Horn option may generate unexpected alerts.
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A VECU software update is available to resolve the issue.
Non-Safety Campaign The batteries may drain quickly due to the VECU not going to sleep.
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Updated VECU software is available to resolve the issue.
Fix-As-Fail The Battery Management System (BMS) may report the incorrect battery condition.
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Additional diagnostics are available to correctly determine and repair the root cause of the issue.
Fix-As-Fail The Master Switch Module (MSM) may lose dash switch memory and functionality when the battery disconnect switch is cycled.
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An improved MSM is available to resolve the issue.
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the...
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appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
Information Only Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead...
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to water intrusion and corrosion in some vehicles.
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
Information Only: The AutoStart System Test does not recognize the hood opening and closing when running the test on a...
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model 579 or 567 chassis equipped with a VECU software version 9.8 and 9.9. The issue will be fixed on a future VECU software update. This bulletin will be updated when the resolution is available.
Fix-As-Fail ? Some vehicles may set a ?Cluster Not Detected? error message when connecting to the CECU with ESA.
Non Safety Campaign: The circuit for the Trailer Hotline/Trailer Power may not be properly protected on Model T680/T880...
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vehicles equipped with this option.
Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
NON-SAFETY CAMPAIGN - AN INCORRECTLY ROUTED WIRE LOOM MAY CATCH ON THE STEERING COLUMN DURING USE, DAMAGING THE STEERING...
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ANGLE SENSOR (SAS) WIRE, CAUSING AN ERROR MESSAGE AND DEACTIVATION OF THE VEHICLES STABILITY CONTROL SYSTEM
Other
8 bulletins"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes.
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2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
Predictive Cruise control (PCC) incomplete assembly and programming.
Incorrectly sized bolts may allow the venturri support bracket to vibrate.
DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number...
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M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to resolve the vibration on the tank cover by adding bottom tank washers.
MY2018 QV/VV Retrofit
Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.
Information: J1939 CAN BUS Best Practices
Fix-As-Fail ? The washer reservoir may leak due to interference with the top drivers-side fan ring support bracket.
Software & Calibration
6 bulletinsThe Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the...
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latest prognostics bulletin verbiage.
Updated Eaton's TAIB0885EN Bulletin link.
The attached procedures document has been updated with more detail and explanations.
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This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.
CARB Chassis Update - Chassis list updated with 5 KW and 31 PB additional chassis.
Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer.
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The issue can be temporarily resolved using any one of the included procedures.
Brakes
6 bulletinsCertain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume...
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requirements per FMVSS/CMVSS 121 Air Brake Systems. This bulletin will be updated when repair parts and procedures are available.
Fix-As-Fail - Bendix New-Gen Lightweight Steer Axle Drum Brake Spider Cracking
Fix-As-Fail: Bendix Wingman radars with ice/snow buildup on the optional PACCAR radar cover may experience false...
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warnings and mild brake applications from the Wingman System.
Fix-As-Fail: Bendix Wingman radars with ice/snow buildup on the optional PACCAR radar cover may experience false...
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warnings and mild brake applications from the Wingman System.
Non-Safety Campaign - The coolant lines connected to the fuel filter may interfere with the brake chamber on certain T680/T880 vehicles.
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Repeated interference may cause the fittings to break and leak coolant.
Fix-As-Fail ? Repair procedure for DTCs U1120 and/or U17C5 with WABCO Q27-6075-130 ABS ECU.
Body & Paint
5 bulletinsTroubleshooting procedures for 2.1m cab power windows are now available.
Information Only Windshield washer pumps have a high No Trouble Found rate.
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Washer pumps may fail to spray due to a clogged filter.
Sleeper roof panels separating.
Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
Informational Only - Install proper in.20 in.
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long fastener for all license plate installations on T680 with Aero Bumpers.
Fuel System
4 bulletinsDue to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile...
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Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primary antenna may experience this degradation
Non-Safety Campaign: vehicles built between February 01, 2017 and April 03, 2017, were built with a heavy-duty end-out...
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selective catalytic reduction (SCR) component that may develop cracks in the ribs of the internal flange.
Campaign ? The lower elbow of the exhaust system does not have a drain hole, allowing water to collect in the pipes and...
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overflow into the aftertreatment canister.
NON-SAFETY CAMPAIGN - POSSIBLE ASSEMBLY AND PROGRAMMING ISSUES WITH THE PCC SYSTEM MAY REDUCE THE FUEL SAVINGS BENEFIT...
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OF PCC.
Transmission
4 bulletinsFix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator...
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(LCA) fault codes leading to possible LCA hardware replacement.
Non-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience transmission service...
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lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Resolution is to update the transmission software and calibrations.
Non-Safety Campaign Vehicles with PACCAR transmissions may experience transmission service lamp activation, no gear...
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engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Transmission software and shift calibration updates are available to resolve
Informational Only ? False Fault Codes may become active with column mounted shifter and Eaton Automated Manual...
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Transmissions (AMT)
HVAC & Climate
4 bulletinsInformation Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the...
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A/C compressor.
Fix as Fail HVAC system may demonstrate inadequate temperature control, be stuck in defrost mode, or have intermittent...
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changes in fan speed that can be remedied with an updated HVAC software.
FIX-AS-FAIL: KENWORTH T680/T880 HVAC PANEL AND TEMPERATURE MODE DOORS NOT FUNCTIONING PROPERLY
FIX-AS-FAIL: AN INTERNAL ISSUE MAY CAUSE SOME HVAC MODE DOOR ACTUATORS TO FAIL.
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THIS WILL CAUSE THE HVAC SYSTEM TO ACT ERRATICALLY OR CONSTANTLY TURN ON AND OFF.
Pre-Delivery & Maintenance
2 bulletinsInformation Only This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke...
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Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
NON-SAFETY CAMPAIGN - INCORRECT PREDICTIVE CRUISE CONTROL (PCC) SPEED SIGNAL ON CUMMINS EQUIPPED T680 VEHICLES.
Lighting
2 bulletinsInformation only - Customer installed inverters may be wired incorrectly.
NON-SAFETY CAMPAIGN - INTERAXLE DRIVELINES AND YOKES WERE INSTALLED THAT ARE NOT MAINTENANCE FREE.
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THIS DOES NOT AFFECT THE VEHICLE FUNCTION.
Suspension
2 bulletinsFix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.
Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.