Hyundai and Kia are recalling more than 600,000 vehicles in Canada and millions more in the United States due to a problem with the anti-lock braking system that could lead to a fire.

Documents released by U.S. safety regulators on Wednesday indicate that the anti-lock brake control unit can leak fluids and cause an electrical short. This can lead to a fire while the vehicles are parked or being driven.

Hyundai says that 326,942 vehicles in Canada are affected, including:

77,571 model years 2012-2015 Hyundai Accent
153,026 model years 2011-2015 Hyundai Elantra;
4,403 model years 2013-2015 Hyundai Elantra Coupe;
85 model years 2014-2015 Hyundai Equus;
7,789 model years 2011-2015 Hyundai Genesis Coupe;
8,507 model years 2013-2015 Hyundai Santa Fe;
24,795 model year 2013 Hyundai Santa Fe Sport;
46,318 model years 2010-2013 Hyundai Tucson;
4,448 model years 2010-2012 Hyundai Veracruz.

An additional 1,642,551 of these makes and models are being recalled in the United States.

The company says it is aware of 21 fire-related incidents in the United States, as well as 22 "thermal incidents," including visible smoke, burning, and melting, but Hyundai Canada told CBC News in a statement that "no incidents" or injuries or deaths have been attributed to this issue."

Kia Canada says that 276,225 vehicles in Canada have been affected, including:

2010-2011 Borrego;
2015-2016 Cadenzas;
2010-2013 Forte;
2010-2013 Forte Coupes;
2015 K900s;
2010-2015 Optimas;
2012-2017 Rios;
2010-2017 Souls;
2011-2014 Sorento;
2011-2013 Sportages.
2010 Sportage;

Another 1.7 million Kia vehicles in the United States are included in the recall.

The U.S. National Highway Traffic Safety Administration, in a statement, said that "until these recalled vehicles are repaired, the safest place to park them is outside and away from homes and other buildings."

It stated, "Fires can occur whether the vehicle is parked and turned off or while driving."

Dealers will replace the anti-lock brake fuse at no cost to owners, but owners will not be notified by mail until November.