The car giant said Wednesday that 997,000 Prius cars in Japan, some 713,000 in North America, another 130,000 in Europe and the rest in other regions are being recalled.
The issue centers around a programming problem in the hybrid system of the third generation Prius. The setting could cause higher thermal stress in certain transistors, which could deform or become damaged.
Also, the glitch could cause warning lights to go off, driving power to be reduced or cause the vehicle to stop. The recalled vehicles were manufactured between March 2009 and February 2014.
No accidents have been reported because of the issue.
The Japanese automaker suffered massive recalls starting in 2009, affecting more than 14 million vehicles for problems including floor mats, gas pedals and brakes.
The Associated Press contributed to this report.