Service brakes, hydraulic: antilock/traction control/electronic limited slip: wheel speed sensor/tone ring
- Component
- Service brakes, hydraulic: antilock/traction control/electronic limited slip: wheel speed sensor/tone ring
- Manufacturer
- NOVA BUS INCORPORATED
- Vehicles affected
- 139
- Reported to NHTSA
- 2010-07-12
- Owners notified
- 2010-07-22
Defect description
NOVA BUS IS RECALLING CERTAIN MODEL YEAR 2007-2010 TRANSIT BUSES EQUIPPED WITH ATC (AUTOMATIC TRACTION CONTROL) SYSTEM AND V-BEA MULTIPLEXING SYSTEM MANUFACTURED FROM APRIL 2, 2007 THROUGH JUNE 30, 2010. THE ATC SYSTEM MAY INADVERTENTLY ACTIVATE WHENEVER THE PARKING BRAKE OR THE BRAKE INTERLOCK IS APPLIED, SINCE THE VEHICLE'S MULTIPLEX PROGRAM DID NOT CORRECTLY SEND THE PARKING BRAKE OR INTERLOCK SIGNAL TO THE ATC SYSTEM. THE ATC SYSTEM COULD MISINTERPRET THIS SITUATION AS WHEEL SPIN, SUBSEQUENTLY APPLYING AND RELEASING THE APPLIED BRAKES. THE VEHICLE COULD THEN MOVE UNEXPECTEDLY.
Safety risk
THE VEHICLE MAY MOVE INADVERTENTLY EVEN WHEN THE PARKING BRAKE IS APPLIED INCREASING THE RISK OF A CRASH.
Manufacturer remedy
DEALERS WILL REPROGRAM THE SYSTEM AND THE ENGINE'S ECU FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JULY 22, 2010. OWNERS MAY CONTACT NOVA BUS AT 450-472-6410.