Thomas Built Er School Bus, Mvp-Ef Non-School Bus +6 more: Electrical

Affects Thomas Built Er School Bus, Mvp-Ef Non-School Bus, HDX Non-School Bus, Mvp-Er Non-School Bus, Er Non-School Bus, HDX School Bus, Mvp-Ef School Bus, Mvp-Er School Bus · 2003–2009 — about 521 vehicles.

The hazard

On certain buses, circuit breakers may trip unnecessarily resulting in a loss of power to chassis and body electrical circuits. Unexpected loss of exterior lighting and/or engine stalling, in conjunction with traffic and road conditions, and the driver's reaction, could increase the risk of a crash. Correction: Dealers will replace the solid state dual power switch with mechanical circuit protection (Mega Fuse).

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