Peterbilt 579: Electronic stability control (esc)

Affects Peterbilt 579 · 2022–2023 — about 46 vehicles.

The hazard

An incorrect estimate of the vehicle mass can reduce the performance of the stability control system and increase the risk of a crash.

What to do

Dealers will update the software, free of charge. Owner notification letters are expected to be mailed March 17, 2023. Owners may contact PACCAR's customer service at 1-425-828-5888 (Kenworth) and 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 23PBA and 23KWA.

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