RECALLS — MAKE · MODEL · YEAR
2026 Peterbilt 579 recalls
3 safety recall campaigns have been filed for the 2026 Peterbilt 579 with Transport Canada and the U.S. NHTSA. Here is what both agencies say.
- Canadian recalls
- 01
- U.S. recalls
- 02
- Total campaigns
- 03
Transport Canada recalls
01- Lights And Instruments#2025357
4,428 units affected
Issue: 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 unexpectedly. This problem could also cause the lift axle(s) to raise or lower on their own. Safety Risk: Lamps that don't work properly could reduce visibility and increase the risk of a crash. Lift axles that move unexpectedly could increase the risk of injury. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to update the vehicle software.
Canadian data updated August 24, 2026
U.S. NHTSA recalls
02- SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE#26V442000
PACCAR Incorporated (PACCAR) is recalling certain 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors. The trailer air connection quick release (QR) valve in the air brake system may have been incorrectly installed, which can cause the trailer to become unstable after the driver applies the brakes. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: An incorrectly installed quick release valve that does not function properly can increase the risk of a crash.
Remedy: Paccar inspected and reinstalled the valves, as necessary, free of charge. All affected tractors have been repaired and therefore no owner notification letters are necessary. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's number for this recall is 26PACC.
- EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE#25V436000
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 vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices and Associated Equipment."
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.
Remedy: 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.
Does this recall apply to my vehicle?
Matched by make, model, and model year. Many recalls affect only specific VIN ranges — confirm with your dealer using your full VIN.
What to do
Recall repairs are free at a franchised dealer in both countries. To confirm a recall applies to your specific vehicle, or to book the work, contact your manufacturer or dealer with your full VIN, or use the official channel:
- NHTSA recall lookup (search by VIN) — U.S. National Highway Traffic Safety Administration
- Defects and recalls database — Transport Canada
Check a 2026 Peterbilt 579 VIN
A VIN decode confirms your vehicle's exact model year, trim and assembly plant, then runs this same recall check against it.