02-177
Service Bulletin/Repair Instructions
Troubleshooting procedures for 2.1m cab power windows are now available.
Vehicle report
2014 KENWORTH T680
Service bulletins
41 bulletinsTechnical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
24KWD
Service Bulletin/Repair Instructions
Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume requirements per FMVSS/CMVSS 121 âÂÂAir Brake SystemsâÂÂ. This bulletin will be updated when repair parts and procedures are available.
03-087 (E295)
Service Bulletin/Repair Instructions
Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
E296
Service Bulletin/Repair Instructions
Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
21KWD
Service Bulletin/Repair Instructions
Information Only â C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter (PM) sensors installed .
E271
Service Bulletin/Repair Instructions
An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
32-017
Service Bulletin/Repair Instructions
Non-Safety Campaign â The batteries may drain quickly due to the VECU not going to sleep. Updated VECU software is available to resolve the issue.
32-018
Service Bulletin/Repair Instructions
Non-Safety Campaign â Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
02-160
Service Bulletin/Repair Instructions
Information Only â Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
26-037
Service Bulletin/Repair Instructions
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.
32-015
Service Bulletin/Repair Instructions
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
32-016
Service Bulletin/Repair Instructions
Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
34-085
Service Bulletin/Repair Instructions
Information Only â Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
32-013
Service Bulletin/Repair Instructions
Information Only: The AutoStart System Test does not recognize the hood opening and closing when running the test on a 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.
43-063
Service Bulletin/Repair Instructions
Emissions Campaign â The Engine Overspeed lamp may illuminate during a smoke opacity test. A software update is available to resolve the issue.
03-071
Service Bulletin/Repair Instructions
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.
01-071
Service Bulletin/Repair Instructions
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.
01-075
Service Bulletin/Repair Instructions
Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
TIB43-062
Service Bulletin/Repair Instructions
Information Only â This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
42-058
Service Bulletin/Repair Instructions
Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.
01-073
Service Bulletin/Repair Instructions
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.
34-077
Service Bulletin/Repair Instructions
Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
34-072
Service Bulletin/Repair Instructions
Information: J1939 CAN BUS Best Practices
32-010
Service Bulletin/Repair Instructions
Information only - Customer installed inverters may be wired incorrectly.
18-008
Service Bulletin/Repair Instructions
Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.
7-17
Service Bulletin/Repair Instructions
Fix-As-Fail ? There is an updated plug to fix leaking steer axle hubcaps.
34-060
Service Bulletin/Repair Instructions
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.
43-048
Service Bulletin/Repair Instructions
Fix-As-Fail: Repair for horizontal exhaust diffuser configurations with broken brackets or cracked diffuser.
41-016
Service Bulletin/Repair Instructions
NON-SAFETY CAMPAIGN: REPLACE THE MOLDED AIR INTAKE PIPE, WHICH CAN CRACK AND ALLOW ROAD DEBRIS INTO THE ENGINE. DEBRIS ENTERING THROUGH THE INTAKE MAY CAUSE SEVERE ENGINE DAMAGE.
16-038
Service Bulletin/Repair Instructions
NON-SAFETY CAMPAIGN: WATSON & CHALIN LIFT AXLE FRAME BRACKETS WITH SLOTTED LOWER MOUNTING HOLES MAY EXHIBIT CRACKING WHEN FASTENERS ARE POSITIONED AT THE UPPER PORTION OF THE SLOT. INSTALLING A DOUBLER PLATE MAY PREVENT CRACKS FROM DEVELOPING. FOR VEHICLES WHERE CRACKING IS EVIDENT, A NEW UPDATED SIDE PLATE WILL BE INSTALLED.
01-068
Service Bulletin/Repair Instructions
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.
04-017
Service Bulletin/Repair Instructions
FIX-AS-FAIL: THE HEAT-STAKE MOUNTING STUDS USED TO RETAIN THE FIXED PANEL COVER CAN FATIGUE. THIS COULD RESULT IN THE FORWARD CHASSIS FAIRING PANEL BECOMING LOOSE AND RATTLING.
27-026
Service Bulletin/Repair Instructions
Eaton ultrashift plus excessive engine over-speed lamp on.
51-008
Service Bulletin/Repair Instructions
T680 predictive cruise control(PCC) incompatibility with cummins engine.
E117
Service Bulletin/Repair Instructions
PRODUCT IMPROVEMENTS AVAILABLE FRONT ENGINE ACCESSORY DRIVE (FEAD) UPDATE - IMPROVE THE LIFE OF AIR CONDITIONING COM0RESSOR CLUTCH BEARING.
TIB-23-001
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. DUE TO DEVELOPING BORATE SALT CRYSTALS FROM A BATCH OF DOT4 FLUID, CAUSING A BLOCKAGE IN CLUTCH MASTER CYLINDER AND NOT ABLE TO COMPRESS CLUTCH OR POOR PEDAL FEEL. MODEL 2013 T680, 880. *PE UPDATED 1/6/15. *PE
TIB-26-025
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. DURING ASSEMBLY, OIL SUPPLY LINE HAD NOT BEEN PROPERLY SEATED AND RESULTED IN OIL PRESSURE TO BEARINGS BEING REDUCED. MODEL 2014 T680. *PE
TIB-E-087
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A MAX GOVERNED CC SPEED, ON SOME TRUCKS, WAS PROGRAMMED INCORRECTLY AND LIMITS MAXIMUM DEFAULT SPEED TO 63 MPH. *PE
TIB-34-053
Service Bulletin/Repair Instructions
KENWORTH: WHILE DRIVING SOME TRUCKS, THE COMBINATION OVERDOOR LAMP WILL FLICKER AND DEFECTIVE LAMPS WILL NEED TO BE REPLACED. MODEL T680. *PE
TIB-13-037
Service Bulletin/Repair Instructions
KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME TRUCKS, THE AIR DRYER BRACKET WILL CRACK AND BECOME LOOSE, RESULTING IN FAILURE. MODEL T680. *PE
TIB-42-052
Service Bulletin/Repair Instructions
KENWORTH: TWO RELATED ISSUES CONCERNING MISDIAGNOSE LOW COOLANT CONDITION AND UNNECESSARY COOLANT PUMP REPLACEMENT DUE TO NOT ABLE TO DIFFERENTIATE BETWEEN NORMAL SEEPAGE OF COOLANT AND A TRUE LEAKAGE FROM PUMP. MODEL T680, T880. *PE
Reading this report
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.