Toyota Prius software program fix might reduce energy efficiency, specialists say

In following years, engineers found cracks in the solder, but could not look for a problem in its manufacturing process. Later, the report said, the cracks weren’;t turning up in the wagon version of the vehicle, the Prius V, which has exactly the same inverter. By 2014, Toyota finally settled on changing the software in the inverter and engine controller. It told federal regulators it could sent owners notices by 2015.

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