NHTSA campaign 14V043000
Hazard
Navistar, Inc. is recalling certain model year 2012-2014 model year CE school buses manufactured December 31, 2010, through November 6, 2012, and equipped with Eaton-brand hybrid automated transmissions. The software controlling the affected transmissions may improperly raise the vehicle's engine speed during downshifts without the driver's input.
Consequence
The increase in engine speed may result in unintended acceleration, increasing the risk of a crash.
Remedy
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.
The text above is quoted verbatim from the NHTSA record. Confirm the affected units and the remedy with the manufacturer or NHTSA. Recall data may be incomplete, delayed, or superseded.