2026 PETERBILT 579 — Problems, Recalls & Safety Data
N/A
Safety Rating
1
Owner Complaint
1
Recall
0
Service Bulletins
0
Investigations
Overview of the 2026 PETERBILT 579
The 2026 PETERBILT 579 has received a total of 1 safety complaint filed with the National Highway Traffic Safety Administration (NHTSA). There has been 1 recall campaign affecting this vehicle, covering issues with EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE. The most commonly reported problem area is the Service Brakes (1 complaint).
Recalls for the 2026 PETERBILT 579
NHTSA has recorded 1 recall for the 2026 PETERBILT 579, potentially affecting up to 56,260 vehicles.
Recall 25V436000 — EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
| 56,260 vehicles affected
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...
Consequence: 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.
View full details →Owner Complaints for the 2026 PETERBILT 579
1 complaint has been filed with NHTSA for the 2026 PETERBILT 579. Below is a breakdown by vehicle component.
| Component | Complaints | Crashes | Fires | Injuries | Deaths |
|---|---|---|---|---|---|
| Service Brakes | 1 | 0 | 0 | 1 | 0 |
Most Recent Complaints
The contact was the operator of a 2026 Peterbilt 579 for an employer. The contact stated that whether driving 30 MPH or 65 MPH, after another vehicle entered the lane in front of the vehicle, the Forward Collision Avoidance: AEB and Lane Keep Assist systems erroneously activated and brought the vehicle to an unsafe and abrupt stop. The contact stated that the RADAR system had experienced a False Positive alert of a possible crash, even though the vehicle was at a safe driving distance ahead. The contact stated that the failure caused other driver’s behind the vehicle to run off the road or skid to a stop to avoid crashing into the rear of the vehicle. The contact stated that the failure also occurred with another vehicle approximately 100-feet ahead coming over into the lane, and the AEB activated, causing the wheels to lock up, bringing the vehicle to an abrupt stop. The contact stated that other drivers angrily honked at him. On one occasion, the contact was followed by an irate driver for ten minutes after the failure had occurred. The contact was concerned for his safety and the safety of the public because the system could not be overridden. The contact stated that on one occasion while his brother was driving the vehicle at a moderate speed, while the contact was asleep in the sleeping netting which the contact believes was not DOT approved, the AEB system activated and sent the contact’s body forward, causing his rib cage to strike a cabinet inside the sleeper berth, causing an injury. The contact had not sought medical attention. The contact stated that the employer was notified of the failures with the vehicle, and the contact was informed to keep driving the vehicle as-is or seek other employment. The contact stated that the RADAR system also experienced False Positive alerts and inadvertent AEB activation while driving and approaching bridges or structures that cast shadows onto the roadway bringing the vehicle to an abrupt stop. The contact stated that prior to the abrupt stop, there was a picture of
Safety Rating for the 2026 PETERBILT 579
NHTSA has not yet tested the 2026 PETERBILT 579 in its New Car Assessment Program.
Technical Service Bulletins for the 2026 PETERBILT 579
No technical service bulletins have been reported for this vehicle.
NHTSA Investigations for the 2026 PETERBILT 579
There are no NHTSA defect investigations on record for this vehicle.
Other Model Years of the PETERBILT 579
- 2021 PETERBILT 579 — 1 complaint
- 2022 PETERBILT 579 — 6 complaints
- 2023 PETERBILT 579 — 3 complaints
- 2024 PETERBILT 579 — 3 complaints
- 2025 PETERBILT 579 — 0 complaints
- 2026 PETERBILT 579 (current)
Other PETERBILT Models
- PETERBILT 379 — 76 total complaints
- PETERBILT PETERBILT — 40 total complaints
- PETERBILT 388 — 36 total complaints
- PETERBILT 389 — 34 total complaints
- PETERBILT 357 — 19 total complaints
- PETERBILT 386 — 14 total complaints
- PETERBILT 387 — 14 total complaints
- PETERBILT 567 — 11 total complaints