2026 Peterbilt 536 problems, complaints & recalls
Safety recalls (3)
Fuel System, Diesel:delivery:hoses, Lines/Piping, And Fittings 2026-10-21 · campaign 26V700000 · 26,729 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2022-2023 Kenworth T370, T270, 2022-2027 Kenworth T280, Peterbilt 548, 2023-2027 Kenworth T480, T380, Peterbilt 536, 537, and 2025 Peterbilt 567 vehicles. The remote fuel filter hoses may separate from the fitting, causing a fuel leak and an engine stall.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire. An engine stall increases the risk of a crash.
Fix: Dealers will replace the fuel hoses, free of charge. Owner notification letters will be mailed beginning December 20, 2026. Owners may contact Peterbilt's customer service at 1-940-591-4220 or Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACJ.
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.
Exterior Lighting:lighting Control Module:software 2025-01-29 · campaign 25V041000 · 5,378 vehicles
Defect: PACCAR Incorporated (PACCAR) is recalling certain 2025 Kenworth T180, Peterbilt 535, 567, 2025-2026 Kenworth T280, 2023-2026 Kenworth T380, 2024-2026 Kenworth T480, 2024-2026 Peterbilt 536, 537, and 548 trucks. The exterior lighting switch may fail, resulting in the hazard lights and the instrument display back-light brightness adjustment not functioning. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 101, "Control and Disp
Risk: Inoperative hazard lights cannot alert other drivers as intended. In addition, the inability to adjust the brightness on the instrument panel display can make it difficult to see critical safety information or distract the driver. Both scenarios can increase the risk of a crash.
Fix: Dealers will update the vehicle cab controller unit (VECU) software, free of charge. Owners are advised that a non-responsive switch can be temporarily reset by a key cycle. Owner notification letters were mailed March 26, 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 25KWB and 25PBB.
Service bulletins (13)
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.
Electrical System 2026-10-23 · 37-007 · Service Bulletin/Repair Instructions
eaton service bulletin taib-1026 instructs dealers to update the master switch module (msm) software. the update must be completed before performing a davie4 learn dash switches procedure to fix intermittent dash switch functionality.
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."
Steering 2026-08-13 · 24KWC/24PBC · Service Bulletin/Repair Instructions
updated sheppard steering gear classification tool link in inspection procedure
Electrical System 2026-05-06 · 02-177 · Service Bulletin/Repair Instructions
troubleshooting procedures for 2.1m cab power windows are now available.
Unknown Or Other 2026-04-16 · 14-034 · Service Bulletin/Repair Instructions
bogie crossmember torque value update - procedure has been updated to correct torque values.
Showing the 6 most recent of 13 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.