2024 Peterbilt 579 problems, complaints & recalls
Most-reported problem areas: Tires:tread/Belt (2) · Fuel/Propulsion System (1)
Safety recalls (7)
Exterior Lighting:lighting Control Module:software 2025-06-26 · campaign 25V436000 · 56,260 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2024-2026 Kenworth T480, T680, T880, W990, Peterbilt 520, 536, 537, 548, 567, 579, 589, 2025 Kenworth T180, Peterbilt 535, 2025-2026 Kenworth T280, T380 and L770 vehicles. The tail brake light, upper and lower beam headlights, reverse light, and turn signal may not illuminate as intended. In addition, the lift axles, if lowered, may revert to a raised position, or oscillate up and down when the signal warning lights are activated. As such, these
Risk: Delayed and unsteady headlights can result in insufficient illumination of the road, decreasing the driver's visibility and increasing the risk of a crash. In addition, an unexpected position change of the lift axles may increase the risk of injury.
Fix: Dealers will update the VCU software, free of charge. Owner letters were mailed August 19, 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 number for this recall is 25PACF.
Electrical System:propulsion System 2025-03-24 · campaign 25V181000 · 238 vehicles
Defect: 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.
Fix: 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.
Electrical System:software 2024-12-09 · campaign 24V915000 · 220,764 vehicles
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.
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.
Fix: 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 2024-03-20 · campaign 24V190000 · 70,509 vehicles
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.
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.
Fix: 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.
Steering 2024-01-25 · campaign 24V044000 · 45,887 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2024-2025 Kenworth T280, T380, T480, T680, T880, L770, W990, and 2024-2025 Peterbilt 389, 520, 535, 536, 537, 548, 567, 579, 589 trucks. The steering gear assemblies may have been assembled incorrectly with fewer recirculating balls than are required, which may result in a loss of steering control.
Risk: A loss of steering control increases the risk of a crash.
Fix: Dealers will inspect and replace the steering gears as necessary, free of charge. Owner notification letters were mailed March 20, 2024. Owners may contact Peterbilt customer service at 1-940-591-4220 and/or Kenworth customer service at 1-425-828-5888. PACCAR's numbers for this recall are 24PBC and 24KWC.
Fuel System, Diesel:storage:tank Assembly 2023-09-27 · campaign 23V653000 · 1,315 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Peterbilt 579 and 567 trucks. The U-bolts that attach the air tank to the chassis may contact the fuel tank and over time, wear a hole in the tank.
Risk: A punctured fuel tank can leak fuel, increasing the risk of a fire.
Fix: Dealers will inspect and trim the U-bolts, and replace the fuel tank as necessary, free of charge. Owner notification letters were mailed November 3, 2023. Owners may contact Peterbilt's customer service at 1-940-591-4220. PACCAR's number for this recall is 23PBH.
Parking Brake 2023-03-20 · campaign 23V185000 · 25 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2023-2024 Peterbilt 579 trucks. The Intellipark Tractor Park Valve Module (PVM) may intermittently become stuck in the un-parked position and fail to move into the park position when the park switch is activated.
Risk: A PVM that fails to move into park can cause a vehicle rollaway, increasing the risk of a crash.
Fix: Dealers will replace the PVM with a new corrected part, free of charge. Owner notification letters were mailed June 12, 2023. Owners may contact PACCAR's customer service at 1-940-591-4220. PACCAR's number for this recall is 23PBC.
Service bulletins (86)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Unknown Or Other 2026-10-28 · 99-050 · Service Bulletin/Repair Instructions
there is an update to the carb base emissions warranty limits table and manufacturer’s warranty coverage section in certain engine model year (emy) 2024-2026 px-7 and px-9 operator’s manuals.
Engine 2026-09-11 · P001 · Service Bulletin/Repair Instructions
"kenworth: dealers should check the chassis list and sir weekly for vin changes. 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."
Engine 2026-09-05 · E343 · Service Bulletin/Repair Instructions
an exhaust manifold slip joint seal kit is now available for epa 2017-2024 paccar mx-13 engines.
Unknown Or Other 2026-09-04 · 01-094 · Service Bulletin/Repair Instructions
[smartair / kims] a/c systems may shut down prematurely when voltage levels drop below a certain threshold.
Engine 2026-09-03 · P002 · Service Bulletin/Repair Instructions
"kw: a link to the paccar powertrain prognostics webcast has been added in the links section. pb: the chassis list has been updated to include 2 chassis. the total chassis count is now 4. a link to the paccar powertrain prognostics webcast has been added in the links section."
Engine 2026-08-27 · P002 · Service Bulletin/Repair Instructions
"kw: a link to the paccar powertrain prognostics webcast has been added in the links section. pb: the chassis list has been updated to include 2 chassis. the total chassis count is now 4. a link to the paccar powertrain prognostics webcast has been added in the links section."
Showing the 6 most recent of 86 bulletins. Search all of them free at nhtsa.gov.
What owners report
2025-08-28 · Tires:tread/Belt · 276,000 mi“the contact filed the complaint on behalf of a fleet driver. the contact owns a 2024 peterbilt conventional 579, equipped with goodyear tires, tire line: endurance lhs, tire size: 295/75/r22.5, dot number:1mc37c8bw3223. the contact stated that while the fleet driver was driving at an undisclosed speed, there was an abnormal flapping sound coming fr…”
2025-08-26 · Tires:tread/Belt · 292,755 mi“the contact owns a 2024 peterbilt 579 equipped with goodyear tires, tire line: endurance, tire size: 295/75/r22.5, dot number: 1mc37c8bw3223. the contact stated that while driving approximately 64 mph, there was an abnormal sound coming from the vehicle, and the vehicle vibrated abnormally. the vehicle was pulled over to the side of the road and in…”
2024-12-19 · Fuel/Propulsion System“what support can i obtain if a vehicle manufacturer is not appropriately responding and taking action to address the open paccar recall e317 where it states they will reimburse a fleet owner for the pruchase cost of fuel additive to address their repeated failures of their fuel injectors…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.