Peterbilt 536, 567 +6 more: Exterior lighting — software

Affects Peterbilt 536, 567, 548, 520, 537, 579, 535, 589 · 2024–2026 — about 56K vehicles.

The hazard

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.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational