Kenworth T680 — Visual System
High risk
Sep 2, 2025
Model years: 2025, 2026
On certain trucks, a software problem could cause the instrument panel cluster not to display while driving. As a result, you may not be able to see certain information about the t
Also affects: Kenworth T880, Kenworth W990
Kenworth T680 — Lights And Instruments
High risk
Jun 26, 2025
Model years: 2024, 2025
On certain trucks, a software problem could cause the stop lamps, low beam headlamps, high beam headlamps, reverse lamps and turn signal lamps not to turn on, or to turn on unexpec
Also affects: Kenworth L770, Kenworth T280, Kenworth T380, Kenworth T480, Kenworth T880
Kenworth T680 — High Voltage
High risk
Mar 24, 2025
Model years: 2021, 2022, 2023, 2024, 2025
On certain electric trucks, the contactors for the high-voltage power system could open. If this happens, there could be a sudden loss of power to the wheels.
Also affects: Peterbilt 520, Peterbilt 579
Kenworth T680 — Brakes
High risk
Dec 9, 2024
Model years: 2021, 2022, 2023, 2024, 2025
On certain trucks, poor signal strength could cause the electronic control unit (ECU) to stop working or not to work properly. As a result, some safety systems may not work, includ
Also affects: Kenworth C500b, Kenworth T370, Kenworth T380, Kenworth T480, Kenworth T800b
Kenworth T680 — Fuel System
High risk
Oct 23, 2024
Model years: 2025
On certain trucks equipped with a Cummins X15 engine, the fuel pump may not have been manufactured properly. As a result, the fuel pump barrels could break and cause a fuel leak. I
Also affects: Kenworth C500, Kenworth T800, Kenworth T880, Kenworth W900, Kenworth W990
Kenworth T680 — Steering
High risk
Jun 12, 2024
Model years: 2025
On certain trucks, the ball stud on the drag link and/or tie rod may not have been manufactured properly. As a result, the stud could fail and cause a loss of steering control.
Also affects: Kenworth T380, Kenworth T480, Kenworth T880, Kenworth W900, Kenworth W990
Kenworth T680 — Steering
High risk
Mar 27, 2024
Model years: 2025
On certain trucks, the steering gear may not have been manufactured properly. As a result, the steering gear could break and there could be a sudden increase in steering effort.
Also affects: Kenworth T480, Kenworth T880, Peterbilt 548, Peterbilt 567, Peterbilt 579
Kenworth T680 — Powertrain
High risk
Mar 8, 2024
Model years: 2021, 2022, 2023, 2024
On certain trucks, the wiring in the right-hand shift stalk may not be properly connected. As a result, you may not be able to shift the transmission back into gear after coming to
Also affects: Kenworth T180, Kenworth T380, Kenworth T480, Kenworth T880, Kenworth W990
Kenworth T680 — Brakes
High risk
Feb 23, 2024
Model years: 2019, 2020, 2021, 2022, 2023, 2024
On certain trucks, the reservoir tank for the air brake system is too small. In certain situations, this could cause reduced braking. Canadian regulations require enough air reserv
Also affects: Kenworth C500, Kenworth T440, Kenworth T470, Kenworth T800, Kenworth T880
Kenworth T680 — Steering
High risk
Jan 25, 2024
Model years: 2024
On certain trucks, the steering gear may not have been assembled correctly. As a result, the steering gear could break and cause a loss of steering.
Also affects: Kenworth T280, Kenworth T380, Kenworth T480, Kenworth T880, Kenworth W990
Kenworth T680 — Brakes
High risk
Jan 17, 2023
Model years: 2023
On certain electric trucks, a programming error could cause the electronic stability control program (ESP) to not work correctly.
Also affects: Peterbilt 579
Kenworth T680 — Lights And Instruments
High risk
Oct 17, 2022
Model years: 2022, 2023
On certain trucks, a software problem could cause the instrument cluster display to freeze while driving. As a result, you may not be able to see certain information about the vehi
Also affects: Kenworth T880, Kenworth W990, Peterbilt 365, Peterbilt 367, Peterbilt 389
Kenworth T680 — Engine
High risk
Aug 18, 2022
Model years: 2023
On certain trucks, a problem in the engine control module (ECM) could cause a short circuit. If this happens, the engine could stall and you may not be able to restart it.
Also affects: Kenworth T480, Kenworth T800, Kenworth T880, Kenworth W900, Kenworth W990
Kenworth T680 — Fuel System
High risk
Aug 4, 2022
Model years: 2022
On a small number of trucks, the mud flap could contact and damage the fuel tank. Over time, wear on the fuel tank could result in a fuel leak.
Kenworth T680 — Steering
High risk
Jul 28, 2022
Model years: 2022, 2023
On certain trucks, the steering gear may not have been assembled correctly. As a result, the steering gear could break and cause a loss of steering.
Also affects: Kenworth C500, Kenworth T270, Kenworth T370, Kenworth T380, Kenworth T440
Kenworth T680 — Steering
High risk
Apr 25, 2022
Model years: 2018, 2019, 2020
On certain trucks, the fasteners that attach the steer arm to the steering knuckle may fail. If this happens, the steer arm could separate from the steering knuckle and cause a los
Also affects: Kenworth T270, Kenworth T370, Kenworth T440, Kenworth T470, Kenworth T660
Kenworth T680 — Lights And Instruments
High risk
Apr 14, 2022
Model years: 2019, 2020, 2021
On certain trucks, the daytime running lamps (DRLs) may not turn on when the vehicle starts moving. Canadian regulations require that DRLs must be on while driving, unless the head
Also affects: Kenworth T880, Kenworth W990
Kenworth T680 — Heater And Defroster
High risk
Nov 9, 2021
Model years: 2022
Issue: On certain vehicles, there could be a problem with the ventilation control system (HVAC). As a result, certain controls may not work, including the windshield defrost functi
Also affects: Kenworth W990, Kenworth T880
Kenworth T680 — Heater And Defroster
High risk
Jul 20, 2021
Model years: 2022
On certain vehicles, there could be a problem with the ventilation control system (HVAC). As a result, certain controls may not work, including the windshield defrost function.
Also affects: Kenworth T880, Kenworth W990
Kenworth T680 — Lights And Instruments
High risk
May 14, 2021
Model years: 2019, 2020, 2021, 2022
On certain trucks, the driver may be able to turn off the daytime running lamps (DRLs) while driving. Canadian regulations require that DRLs must stay on while driving, unless the
Also affects: Kenworth T280, Kenworth T380, Kenworth T880, Kenworth W990, Peterbilt 389
Kenworth T680 — Powertrain
High risk
Feb 17, 2021
Model years: 2021, 2022
On certain vehicles, the cap screws that attach the flywheel to the crankshaft may not have been properly tightened. As a result, the flywheel could detach. If this happens, there
Also affects: Kenworth T800, Kenworth T880, Kenworth W900, Kenworth W990, Peterbilt 367
Kenworth T680 — Brakes
High risk
Sep 29, 2020
Model years: 2016, 2017, 2018, 2019, 2020, 2021
Certain trucks were built with a standard rear brake ABS modulator valve instead of a quick release valve. This could result in an increased stopping distance.
Kenworth T680 — Lights And Instruments
High risk
Apr 7, 2020
Model years: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
On certain trucks, the warning light for the tractor anti-lock brake system (ABS) may not turn on if the system loses power. If this happens, the driver will not get warning that t
Also affects: Kenworth T170, Kenworth T270, Kenworth T370, Kenworth T660, Kenworth T800
Kenworth T680 — Visual System
High risk
Apr 26, 2019
Model years: 2020
On certain trucks, the upper glass on the side mirrors may not be properly attached. This could cause the mirror glass to fall off or to hang from its wiring and block the lower co
Also affects: Kenworth T880, Kenworth W990, Peterbilt 567, Peterbilt 579
Kenworth T680 — Powertrain
High risk
Mar 7, 2019
Model years: 2020
On certain trucks, the rear axles may not contain any oil. This may result in accelerated bearing, hub and axle shaft wear. This wear could cause a separation of a wheel end (hub,
Also affects: Kenworth W900
Kenworth T680 — Seats And Restraints
High risk
Dec 13, 2018
Model years: 2018
On certain vehicles, the webbing on certain seat belt buckle assemblies may not have been securely fastened during assembly. As a result, in the event of a crash, the seat belt may
Also affects: Kenworth T880, Peterbilt 567, Peterbilt 579
Kenworth T680 — Lights And Instruments
High risk
Nov 19, 2018
Model years: 2013, 2014, 2015, 2016, 2017, 2018, 2019
On certain trucks, the intermediate side marker lamp/turn signals do not comply with the requirements of Canada Motor Vehicle Safety Standard (CMVSS) 108 - Lighting System and Retr
Also affects: Kenworth T880
Kenworth T680 — Fuel System
High risk
Sep 25, 2018
Model years: 2017, 2018, 2019
On certain trucks built with a Cummins X15 or ISX15 engine equipped with nylon fuel lines and a banjo bolt on the fuel pump, a blockage in the fuel cooling system may cause a fuel
Also affects: Peterbilt 579, Peterbilt 587, Peterbilt 389, Kenworth T660, Peterbilt 386
Kenworth T680 — Lights And Instruments
High risk
Feb 8, 2018
Model years: 2017, 2018
Certain vehicles equipped with Eaton Ultrashift Plus or Eaton Advantage automatic transmissions with right hand stalk shifters may not comply with the requirements of Canada Motor
Also affects: Kenworth T880, Peterbilt 567, Peterbilt 579
Kenworth T680 — Powertrain
High risk
Dec 28, 2017
Model years: 2018
Certain vehicles may not comply with the requirements of Canada Motor Vehicle Safety Standard (CMVSS) 102 – Transmission Control Functions. The transmission control module may allo
Also affects: Kenworth T880, Peterbilt 567, Peterbilt 579
Kenworth T680 — Steering
High risk
Sep 25, 2017
Model years: 2016
On certain vehicles, the castellated nut and cotter pin on the steer axle may not have been tightened to specification. This could cause the tie rod to become loose in the steer ax
Also affects: Kenworth T170, Kenworth T270, Kenworth T370, Kenworth T440, Kenworth T660
Kenworth T680 — Electrical
High risk
Jul 27, 2017
Model years: 2013, 2014, 2015, 2016, 2017
On certain vehicles, the polyfuse for the spotlight could develop a short circuit in the cabin fuse box. A short circuit could result in overheating and melting of the fuse box, an
Also affects: Kenworth T880, Peterbilt 567, Peterbilt 579
Kenworth T680 — Fuel System
High risk
Jul 20, 2017
Model years: 2018
On certain vehicles equipped with Cummins ISX 15 engines and certain fuel pumps, the drive gear on the fuel pump may spin loose on the drive shaft. This could result in a loss of p
Also affects: Kenworth C500, Kenworth T800, Kenworth T880, Kenworth W900, Peterbilt 367
Kenworth T680 — Fuel System
High risk
Feb 20, 2017
Model years: 2015, 2016, 2017, 2018
On certain vehicles equipped with 2017 emissions engines, a tee fitting in the fuel supply was improperly manufactured and could leak fuel. Leaking fuel, in the presence of an igni
Also affects: Kenworth K370, Kenworth T880, Peterbilt 567, Peterbilt 579
Kenworth T680 — Engine
High risk
Jun 8, 2016
Model years: 2017
On certain vehicles, the Engine Control Module (ECM) may develop an internal electrical short circuit that could blow a fuse in the ECM's electrical supply circuit. This could caus
Also affects: Kenworth C500, Kenworth T660, Kenworth T800, Kenworth T880, Kenworth W900
Kenworth T680 — Engine
High risk
Sep 23, 2015
Model years: 2016
On certain vehicles equipped with a Cummins engine, the Engine Control Module (ECM) could develop an internal electrical short circuit that could blow a fuse in the ECM’s electrica
Also affects: Peterbilt 587, Peterbilt 382, Peterbilt 579, Peterbilt 567, Kenworth T880
Kenworth T680 — Brakes
High risk
Jul 20, 2015
Model years: 2016
Certain vehicles fail to comply with the requirements of Canada Motor Vehicle Safety Standard 121 - Air Brake Systems. The two service brake connections of the SR-7 spring brake va
Also affects: Kenworth T800, Kenworth W900, Kenworth T660, Kenworth T880, Kenworth T470
Kenworth T680 — Lights And Instruments
High risk
Jul 20, 2015
Model years: 2011, 2012, 2013, 2014, 2015, 2016
Certain vehicles equipped with HID headlamps may not comply with the requirements of Canada Motor Vehicle Safety Standard 108 - Lighting System and Retroreflective Devices. A Dayti
Also affects: Kenworth T880, Kenworth T470, Kenworth T440, Kenworth T660
Kenworth T680 — Wheels
High risk
May 8, 2015
Model years: 2016
On certain vehicles, the wheel nuts may have been insufficiently tightened during vehicle assembly. This could cause the wheel nuts to loosen and could lead to a complete separatio
Also affects: Kenworth T800, Kenworth T660, Kenworth T880, Kenworth W900
Kenworth T680 — Electrical
High risk
May 8, 2015
Model years: 2011, 2012, 2013, 2014, 2015, 2016
On certain vehicles, water could migrate into wiper motor head and could lead to internal corrosion. This internal corrosion could form a conductive salt bridge which could result
Also affects: Kenworth 963, Kenworth C500, Kenworth C540, Kenworth C550, Kenworth T270
Kenworth T680 — Electrical
High risk
May 8, 2015
Model years: 2014, 2015, 2016
On certain vehicles equipped with PACCAR MX-13 engines and Delco-Remy 40SI alternators, the alternator charge cable may chafe against an air conditioning discharge line. This chafi
Also affects: Peterbilt 567, Peterbilt 386, Peterbilt 579, Peterbilt 587, Peterbilt 389
Kenworth T680 — Brakes
High risk
Dec 23, 2014
Model years: 2015
On certain vehicles, brake chamber diaphragm(s) may not be properly seated. This could lead to brake drag, causing brake overheating or unintended spring brake application. These i
Also affects: Kenworth T270, Kenworth T370, Kenworth T440, Kenworth T470, Kenworth T660
Kenworth T680 — Seats And Restraints
High risk
Jan 24, 2014
Model years: 2014
On certain vehicles, the seat belts may not comply with Canada Motor Vehicle Safety Standard 209 - Seat Belt Assemblies. Due to a defect in manufacturing, the seat belt buckle may
Also affects: Kenworth C500, Kenworth C550, Kenworth T170, Kenworth T270, Kenworth T370
Kenworth T680 — Other
High risk
Jan 22, 2014
Model years: 2013, 2014
On certain vehicles, the driver and passenger door latches may fail and remain either permanently locked or unlocked. If this were to occur, the driver and/or passenger(s) may not
Also affects: Peterbilt 567, Peterbilt 579
Kenworth T680 — Lights And Instruments
High risk
Dec 5, 2013
Model years: 2014
The stop/turn/tail lights used on certain vehicles may not comply with the requirements of Canada Motor Vehicle Safety Standard (CMVSS) 108 - Lighting System and Retroreflective De
Also affects: Kenworth T170, Kenworth T270, Kenworth T370, Kenworth T440, Kenworth T470
Kenworth T680 — Electrical
High risk
May 24, 2013
Model years: 2014
On certain trucks, an internal defect in the ignition switch can cause the starter to engage when the key is partially inserted. This would allow the engine to start unexpectedly,
Also affects: Kenworth T170, Kenworth T270, Kenworth T370, Kenworth T470, Kenworth T660
Kenworth T680 — Seats And Restraints
High risk
Mar 12, 2013
Model years: 2013, 2014
On certain trucks, the cables which anchor the seatbelt buckle assemblies could fail. Failure of the seatbelt to restrain the seat occupant would increase the risk of personal inju
Also affects: Peterbilt 587, Kenworth T880, Peterbilt 579, Peterbilt 567
Kenworth T680 — Lights And Instruments
High risk
Feb 19, 2013
Model years: 2013, 2014
On certain vehicles equipped with an exterior lights test switch, pressing the switch while the vehicle is in motion will cause all exterior lighting to be turned off. An unexpecte
Also affects: Kenworth T800, Peterbilt 567, Peterbilt 579
Kenworth T680 — Seats And Restraints
High risk
Jul 13, 2012
Model years: 2013
On certain vehicles, the upper bunk restraint system anchors could fail during a vehicle crash. Failure of belt anchorage to restrain the occupant as intended would increase the ri
Kenworth T680 — Label
High risk
Jul 13, 2012
Model years: 2013
On certain vehicles, the warning label located on the front of the upper bunk may deform, rendering the text unreadable. The label warns users that the upper bunk is not to be used
Kenworth T680 — Brakes
High risk
May 21, 2012
Model years: 2013
Certain vehicles equipped with 15-foot coiled trailer air lines fail to comply with the requirements of Canada Motor Vehicle Safety Standard 121 - Air Brake Systems. Specifically,
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