Mack Pioneer: Lights and Instruments

Affects Mack Pioneer · 2026 — about 46 vehicles.

The hazard

Issue: On certain trucks, the automatic high beams may not switch to low beams automatically. As a result, the trucks may not meet certain requirements of Canadian regulations. Safety Risk: High beams that stay on could cause glare for oncoming drivers and increase the risk of a crash. Corrective Action: To reduce the safety risk, Mack recommends you switch manually between the low beams and high beams until the recall repairs have been completed. Mack will notify owners by mail and advise you to take your vehicle to a dealership to update the vehicle software.

What to do

Contact your dealer; the remedy details were not included in the filing.

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