Navistar Inc. (Navistar) is recalling certain model year 2010-2011 IC bus 3200, model year 2012 and 2014 IC bus CE and model year 2011-2013 IC bus HC transit buses and model year 2008-2013 International 4300 and model year 2013 International Workstar commercial trucks equipped with Eaton hybrid automated transmissions. The software controlling the affected transmissions may improperly raise the vehicle's engine speed during downshifts without the driver's input.
The increase in engine speed may result in unintended acceleration, increasing the risk of a crash.
Navistar will notify owners and Eaton authorized service facilities will update the Hybrid Control Module Software version, free of charge. The recall began on May 28, 2014. Owners may contact Navistar at 1-331-332-1590.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.