2023 Peterbilt 537 problems

Defect

PACCAR Incorporated (PACCAR) is recalling certain 2023-2024 Peterbilt 535, 536, 537, 548, 2023-2024 Kenworth T280, T380, T480, and 2024 Kenworth T180 trucks. The throttle pedal assembly may contain an oversized magnet carrier, slowing the responsiveness or causing the pedal to stick.

Consequence

A pedal that sticks increases the risk of a crash.

Remedy

Dealers will inspect and replace the throttle pedal as necessary, free of charge. Owner letters were mailed April 11, 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 25PBA and 25KWA.

Defect

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.

Consequence

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.

Defect

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.

Consequence

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.

Defect

PACCAR Incorporated (PACCAR) is recalling certain 2022-2024 Peterbilt 535, 536, 537, 548, and Kenworth T180, T280, T380, T480 trucks. The glass lock ring on the cab mirror assembly may not be fully seated, allowing the mirror glass to detach.

Consequence

A detached mirror glass can reduce driver visibility, increasing the risk of a crash.

Remedy

Dealers will inspect the mirror glass lock ring and repair it as necessary, free of charge. Owner letters were mailed February 23, 2024. Owners may contact Kenworth customer service at 1-425-828-5888 and/or Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24KWA and 24PBA.

Defect

PACCAR Incorporated (PACCAR) is recalling certain 2023-2024 Kenworth T280, T380, T480, Peterbilt 536, 537, and 548 trucks. The remote Stage 2 fuel filter hoses may have been damaged during production, allowing the hoses to leak or disconnect.

Consequence

A disconnected hose will result in an engine stall, increasing the risk of a crash. Also, a fuel leak in the presence of an ignition source increases the risk of a fire.

Remedy

Dealers will replace both hoses, free of charge. Owner notification letters are expected to be mailed November 4, 2023. 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 23KWF and 23PBF.

Defect

PACCAR Incorportated (PACCAR) is recalling certain 2023-2024 Peterbilt 536, 537, 548, 2023-2024 Kenworth T280, T480, and 2024 Kenworth T380 vehicles. The adhesive thread-lock may not have been applied to the four flange mounted yoke bolt threads, allowing the driveline fasteners to loosen.

Consequence

Loose fasteners may allow the driveline to separate from the truck, increasing the risk of a crash.

Remedy

Dealers will apply adhesive thread-lock and replace the fasteners, free of charge. Owner notification letters are expected to be mailed September 19, 2023. Owners may contact PACCAR's customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 23KWE and 23PBE.

Defect

PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Kenworth T280, T380, T480, Peterbilt 536, 537, and 548 vehicles. When the brake pedal is fully applied and then released rapidly, the pedal plunger that connects the brake pedal to the brake valve may become disconnected, causing the service brakes to fail.

Consequence

Service brake failure can increase the risk of a crash.

Remedy

Dealers will add a pedal restraint bracket, free of charge. Owner notification letters were mailed April 7, 2023. Owners may contact Kenworth's customer service at 1-425-828-588 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 23KWB and 23PBB.

Defect

PACCAR Incorporated (PACCAR) is recalling certain 2023 Peterbilt 220, 389, 520, 536, 537, 348, 367, 567, 548, 579, and 2023 Kenworth T680, K270, T440, T880, W990, K370, T280, T380, T480, T800, and W900 vehicles. The engine control module (ECM) may experience an internal electrical short-circuit, causing the engine to stall.

Consequence

An unexpected engine stall can increase the risk of a crash.

Remedy

Dealers will replace the ECM, free of charge. Owner notification letters are expected to be mailed October 16, 2022. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 22KWG and 22PBG.

Defect

PACCAR Incorporated (PACCAR) is recalling certain 2022-2023 Kenworth T170, T270, T280, T370, T380, T440, T470, T480, T680, T800, T880, W900, W990, C500, and 2022-2023 Peterbilt 325, 330, 337, 348, 365, 367, 389, 520, 536, 537, 548, 567, and 579 vehicles. The steering gears may have been assembled incorrectly, which can cause the gears to fracture.

Consequence

A fractured steering gear can cause a loss of steering control, increasing the risk of a crash.

Remedy

Dealers will inspect the steering gear serial numbers, and replace the steering gears as necessary, free of charge. Owner notification letters were mailed September 26, 2022. 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 22PBE and 22KWE.

Defect

PACCAR, Incorporated (PACCAR) is recalling certain 2022 Kenworth T180, 2021-2023 Kenworth T280, 2022-2023 Kenworth T380, 2022-2023 Peterbilt 536, and 537 vehicles. Internal components of the transmission actuator may slip, causing the actuator to become miscalibrated.

Consequence

A miscalibrated actuator may cause the transmission to shift into an unexpected gear, increasing the risk of a crash.

Remedy

Dealers will replace the transmission actuator, free of charge. Owner notification letters were mailed December 8, 2022. Owners may contact PACCAR's customer service at 1-425-828-5888 (Kenworth); 1-940-591-4220 (Peterbilt). PACCAR's number for this recall is 22KWD and 22PBD.