Mack · Canada · High
Mack Chu, Cxu: Lights and Instruments
Affects Mack Chu, Cxu · 2007–2010 — about 1K vehicles.
The hazard
On certain trucks, an electrical short circuit in the fog light circuitry could result in a loss of low beam headlamp function. Loss of headlamp illumination, should it occur during a rainy/snowy day, or during hours of darkness, could compromise the driver’s ability to see the road and its users, which could result in a crash causing property damage and/or personal injury. Correction: Dealers will add an extra wiring harness between the cab harness and the Daytime Running Lamp (DRL) module, in order to isolate the fog light circuit.
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