2021 Kenworth T680 recalls

• High Voltage#2025150March 24, 2025

  47 units affected

  Issue: 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. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to update the vehicle software and replace a wiring harness.

• Brakes#2024744December 9, 2024

  23,441 units affected

  Issue: 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, including the antilock braking system, automatic traction control, electronic stability control, active cruise control and the collision mitigation system. Safety Risks: Vehicle safety systems that don't work correctly could increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to reprogram the ECU software.

• Powertrain#2024161March 8, 2024

  5,051 units affected

  Issue: 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 a stop. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to inspect and, if necessary, replace the right-hand shift stalk assembly.

• Brakes#2024121February 23, 2024

  171 units affected

  Issue: 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 reservoir capacity to ensure the brakes work even with heavy use or when there is a partial loss of the air system. Safety Risk: Reduced braking can cause extended stopping distances and increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to replace or add an additional air reservoir tank, as necessary.

• Lights And Instruments#2022185April 14, 2022

  846 units affected

  Issue: 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 headlamps or fog lamps are switched on. Note: This recall only affects trucks that were repaired under recall 21KWD (Transport Canada recall 2021-287). Safety Risk: Driving without daytime running lights could make the vehicle less visible to others and increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and instruct you to take your truck to a dealership to update the vehicle software.

• Lights And Instruments#2021287May 14, 2021

  9,308 units affected

  Issue: 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 headlamps or fog lamps are switched on. Safety Risk: Driving without daytime running lights could make the vehicle less visible to others and increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and instruct you to take your truck to a dealer to update the vehicle software.

• Powertrain#2021069February 17, 2021

  47 units affected

  Issue: 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 could be a loss of power to the wheels and parts could be ejected from the engine compartment. Safety Risk: A loss of power to the wheels could increase the risk of a crash. Parts that are ejected from the engine compartment could create a risk of injury. Corrective Actions: Cummins will notify owners by mail and instruct you to take your truck to a Cummins authorized service center to tighten the flywheel cap screws. Cummins will repair damaged components, as necessary.

• Brakes#2020461September 29, 2020

  20 units affected

  Issue: 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. Note: This recall only affects certain trucks equipped with WABCO 6S/6M ABS brake systems and drum brakes. Safety Risk: An incorrect ABS modulator valve can cause increased stopping distances and increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and instruct you to take your truck to a Kenworth dealer to replace the standard rear brake ABS modulator valves with quick release ABS modulator valves.

Canadian data updated August 24, 2026

• ELECTRICAL SYSTEM:PROPULSION SYSTEM#25V181000March 24, 2025

  PACCAR Incorporated (PACCAR) is recalling certain 2022-2025 Peterbilt 520, 579, and 2021-2025 Kenworth T680 trucks. The high voltage (HV) contactors may open, causing a sudden loss of high voltage and a loss of drive power.

  Risk: A loss of drive power increases the risk of a crash.

  Remedy: Dealers will update the software and replace the electrical harness, free of charge. Owner notification letters were mailed May 13, 2025. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's numbers for this recall are 25PBC and 25KWC.

• SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE#24V915000December 10, 2024

  PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning.

  Risk: Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.

  Remedy: Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24KWL and 24PBL.

• POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT#24V190000March 20, 2024

  PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Peterbilt 365, 367, 389, 535, 536, 537, 548, 567, 579, and 2021-2025 Kenworth T180, T280, T380, T480, T680, T880 and W990 trucks. The right-hand gear shifter stalk connectors may have been improperly crimped, resulting in a loss of communication.

  Risk: A loss of communication between the gear shifter and the transmission may result in the vehicle becoming disabled after coming to a stop, increasing the risk of a crash.

  Remedy: Dealers will inspect and replace the gear shifter assembly as necessary, free of charge. Owner letters were mailed December 15, 2025, then phased after that. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24PBE and 24KWE.

• SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK#24V145000February 23, 2024

  PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles. The air tanks have an insufficient volume of air for the brake system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."

  Risk: Insufficient air volume can reduce braking performance and increase the risk of a crash.

  Remedy: Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 24KWD.

• ELECTRICAL SYSTEM:WIRING#21V00N000December 29, 2021

  PACCAR Incorporated (PACCAR) is recalling certain 2016-2022 Peterbilt 567, 579, 2021-2022 Peterbilt 536, 2017-2021 Kenworth T880, 2016-2022 Kenworth T680, 2018-2020 Kenworth T440, 2020 Kenworth T270, and 2021 Kenworth T280 vehicles. The methane detection system will not function if the system loses power.

  Risk: The operator may be unaware of a system malfunction or the presence of excessive methane levels, increasing the risk of injury or fire.

  Remedy: Dealers will re-wire the warning alarm, free of charge. Owner notification letters were mailed December 1, 2022. Owners may contact Peterbilt customer service at 1-940-591-4220, and Kenworth customer service at 1-425-828-5888. PACCAR's numbers for this recall are 21KWH and 21PBN.

• ENGINE#21V080000February 17, 2021

  PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.

  Risk: A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.

  Remedy: PACCAR will notify owners, and dealers will properly torque the capscrews and the engine will also be inspected for damage and, if necessary, repaired, free of charge. The recall began on March 29, 2021. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWA and 21PBB.

• SERVICE BRAKES, AIR:ANTILOCK#20V593000September 28, 2020

  PACCAR Incorporated (PACCAR) is recalling certain 2016-2021 Kenworth T680 trucks equipped with a 2.1m Cab and WABCO 6S/6M ABS brake system with drum brakes. The brake systems were manufactured with a standard rear-brake ABS modulator valve instead of a quick release valve, which may exceed the intended service-brake release timing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."

  Risk: Longer than expected service-brake release timing may lengthen vehicle stopping distance, increasing the risk of a crash.

  Remedy: PACCAR will notify owners, and dealers will replace the standard rear-brake, ABS modulator valve with a quick release valve, free of charge. The recall began November 30, 2020. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 20KWD.