Defect
On certain plug-in hybrid vehicles, the DC-DC converter located under the rear seat could fail. If this happens, the DC-DC converter and nearby parts could overheat.
Safety Risk
A DC-DC converter that overheats can create the risk of a fire.
Remedy
Toyota will notify owners by mail and advise you to take your vehicle to a dealership to replace the DC-DC converter. To reduce the safety risk, Toyota recommends not to charge your vehicle while the air temperature is below or expected to drop below 5° C until the recall repairs have been completed.