Peterbilt · Canada · Mod
Peterbilt 548, 537 +2 more: Lights and Instruments
Affects Peterbilt 548, 537, 536, 567 · 2025–2026 — about 303 vehicles.
The hazard
Issue: On certain trucks, the exterior light switch could fail. If this happens, the hazard lights and the backlight for the instrument cluster display may not work. As a result, warnings, tell-tales and gauges may not display properly. Safety Risk: Warnings, tell-tales and gauges that don't display properly could increase the risk of a crash. Additionally, hazard lamps that don't work could make the vehicle less visible and increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to update the vehicle electronic control unit software.
What to do
Contact your dealer; the remedy details were not included in the filing.