2026 Peterbilt 579 recalls and problems

The 2026 Peterbilt 579 has 2 recalls and 1 owner complaint on file with NHTSA; the most reported problem area is service brakes.

How the 2026 compares

Lowest

Fewest complaintsMost complaints

Lowest complaint count among 13 579 model years — 13th most. Newer model years have had less time on the road, so their counts are still growing.

2recalls

1complaints

0crashes

0fires

1injuries

200median miles

Owner complaints filed with NHTSA, not verified and not adjusted for sales. Ranking compares this model's own years only.

Does your car have an open recall?
Recalls apply to specific vehicles. Only a VIN lookup on NHTSA's official site shows whether yours is affected and still unrepaired.

Check your VIN →

2 recalls

Service Brakes

Jul 8, 2026 · NHTSA campaign 26V442000 · 8 vehicles

Problem: 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

Jun 26, 2025 · NHTSA campaign 25V436000 · 56,260 vehicles

Problem: 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.

Recall text as published by NHTSA and the manufacturer.

What owners complain about

Service Brakes1

Owner complaints filed with NHTSA; one complaint can name several areas. Not verified by NHTSA.

2026 vs. other Peterbilt 579 years

Owner complaints by model year; the darker bar is the 2026. Click a bar to switch year.

Questions

Does the 2026 Peterbilt 579 have recalls?

Yes — NHTSA lists 2 recall campaigns covering the 2026 Peterbilt 579, the latest from Jul 8, 2026 (service brakes). A recall applies to specific vehicles: enter your VIN at nhtsa.gov/recalls to see whether yours is affected and still open.

What are the most common problems with the 2026 Peterbilt 579?

Owner complaints filed with NHTSA most often mention service brakes (1). Complaints are consumer reports and are not verified by NHTSA.