Ford Motor Company has instructed dealers to temporarily halt Mustang Mach-E deliveries due to a potential safety issue, a setback for the automaker as it seeks to cement its position as an electric vehicle pioneer.

Ford is recalling 48,924 Mustang Mach-Es built at its Cuautitlan, Mexico, facility for the 2021 and 2022 model years, according to a company representative. The recall was sent to the National Highway Traffic Safety Administration, which did not reply to a request for comment right away.

The problem is that high-voltage battery main contactors can overheat, causing automobiles to lose power while in motion or fail to start. The problem is being fixed with a software update that owners may get over the air or at their local dealer, according to Ford. It further said that there are no ongoing investigations with the National Highway Traffic Safety Administration.

Ford surpassed Tesla Inc. as the second-largest seller of electric vehicles in the United States last year, thanks to the Mustang Mach-E, which sold 27,140 units in 2021. So far this year, sales of the battery-powered crossover SUV have increased by 50% to 15,718 units, and the vehicle had its best period yet in May.

After three days of falling prices, Ford’s stock rebounded 3.8 percent to $12.26 at 11:12 a.m. in New York.