The Vehicle May Stall or Operate Only at Reduced Power
Drive Train, February 12, 2014
RepairPal Expert Overview
Our Quick Take:
The vehicle may operate only at a reduced power level or stall without warning.
What Should You Do?
Toyota will notify owners of affected vehicles beginning late February, 2014. If you don't receive notification you feel you should have, please contact your dealer for further instruction. They may ask for your vehicle identification number (VIN), so please have it handy when you call.
These vehicles are being recalled because one of the electronic components of the hybrid control system, the Intelligent Power Module (IPM), can fail internally. This module is located inside of the inverter module and contains transistors that may become damaged from high operating temperatures. If a failure were to occur, various warning lights would illuminate and the vehicle would only operate in a reduced power mode for a short time or stall completely, increasing the risk of a crash. Dealers will update the software in both the motor/generator control module and the hybrid control module to correct this concern. If an inverter module were to fail before the software updates are performed, it would be replaced as part of this recall.
Manufacturer's Report Date:
February 12, 2014
NHTSA CAMPAIGN ID Number:
NHTSA Action Number:
HYBRID PROPULSION SYSTEM
Potential Number of Units Affected:
Toyota is recalling certain model year 2010 through 2014 Prius vehicles. In the affected vehicles, the Intelligent Power Module (IPM) inside the inverter module (a component of the hybrid system) contains transistors that may become damaged from high operating temperatures. If this occurs, various warning lamps will be illuminated on the instrument panel and the vehicle will have reduced power allowing it to only drive a short distance.
The vehicle may enter a fail-safe/limp-home mode that limits the drivability of the vehicle. The hybrid system could also shut down completely resulting in a vehicle stall, increasing the risk of a crash.
Toyota will notify owners and dealers will update the software for both the motor/generator control electronic control unit (ECU) and the hybrid control ECU, free of charge. If an owner experiences a failure of the inverter before the vehicle receives updated software, the dealer will replace the inverter assembly with a new one at no charge. The recall is expected to begin in late February 2014. Owners may contact Toyota at 1-800-331-4331.
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.
Recall data provided by the National Highway Traffic Safety Administration