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California class action alleges 2010-2014 Toyota Prius cars enter fail-safe modes and stall.

May 14, 2019 — A Toyota Prius inverter failure class action lawsuit will move forward after a federal judge refused to dismiss most of the claims.

The class action lawsuit is two suits combined for California customers of 2010-2014 Toyota Prius hybrid cars that enter "fail-safe" mode or completely stall due to overheated inverters.

The inclusion of a boost converter enabled Toyota to reduce the size of the car’s battery and generate more power by increasing the maximum voltage to 500 volts during “high-load” driving conditions. The lawsuit says the additional voltage increases the power of the motor, but it generates a lot more heat within the IPM.
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