Alexander Dennis ENVIRO500: Brakes

Affects Alexander Dennis ENVIRO500 · 2014–2015 — about 6 vehicles.

The hazard

On certain buses equipped with Wabco Tristop park/spring brake actuators at time of assembly, or during subsequent servicing, the actuators used may have been incorrectly assembled by Wabco. This could cause the park/spring brake function of the actuator to fail, causing a loss of parking brake function at the wheel controlled by the actuator. This could increase the risk of a vehicle rollaway, potentially causing injury and/or damage to property. Correction: Dealers will replace affected actuators.

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