Toyota Motors / AFP / Getty Images
February 12, 2014 7:40 AM EST

A glitch in the Toyota Prius’s power system is leading the world’s largest automaker to recall 1.9 million units of its hybrid standard-bearer.

The voluntary recall is intended to fix a software defect that can shut down the hybrid engine system under “higher thermal stress” and stop the car, the company said. Toyota said no accidents have been caused by the defect, which mostly affects cars in Japan and the United States, reports the Financial Times.

The Prius is the world’s biggest-selling hybrid car at 4.2 million global sales, and the recall is a setback for both the Japanese carmaker and the world’s leading hybrid.


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