Various Concerns With the Hybrid Drive System
Drive Train, September 4, 2013
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Our Quick Take:
Various warning lamps may illuminate, drivability concerns could be encountered, or the the hybrid drive system could shut down causing the vehicle to stall unexpectedly increasing the risk of a crash.
What Should You Do?
Toyota will notify owners of affected vehicles beginning late September 2013. If don't receive notification and you feel you should, please contact your dealer for further instruction. They may ask for your vehicle identification number (VIN), so please have it handy when you call. Please note: Vehicles that had their Intelligent Power Module (IPM) replaced as part of recall 11V-342 are not affected by this recall.
Two of the main control modules for the hybrid drive system are the Inverter Module and the Intelligent Power Module (IPM), which is located inside the Invertor Module. The IPM can operate at temperatures high enough to damage its electrical solder connections. Damaged solder joints can result in illumination of warning lights, various drivability concerns, and possible stalling of the hybrid drive system. Dealers will replace the IPM on affected vehicles to correct this concern.
Manufacturer's Report Date:
September 4, 2013
NHTSA CAMPAIGN ID Number:
NHTSA Action Number:
HYBRID PROPULSION SYSTEM
Potential Number of Units Affected:
Toyota is recalling certain model year 2006-2010 Highlander hybrid vehicles manufactured February 16, 2005, through July 29, 2010; and model year 2006-2008 Lexus RX400h vehicles manufactured February 23, 2005, through December 2, 2008. The Intelligent Power Module (IPM) inside the inverter module may contain transistors that have higher operating temperatures than the solder can support and the transistors may be heat damaged by the solder. If this occurs, various warning lamps, including the malfunction indicator lamp, slip indicator light, brake system warning light, and master warning light, will be illuminated on the instrument panel.
The vehicle may enter a fail-safe/limp-home mode that limits the drivability of the vehicle. It is possible that the hybrid system will shut down while the vehicle is being driven, causing the vehicle to stall unexpectedly, increasing the risk of a crash.
Toyota will notify owners, and dealers will replace the IPM free of charge. The recall is expected to begin in late September 2013. Owners may contact Toyota at 1-800-331-4331. Vehicles that had their IPM replaced under recall 11V-342 are not affected by this campaign.
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