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Ford recalls 680,000 cars; seat belts may not hold in crash

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GLENDALE, CA - JANUARY 29: The Ford logo on a car is seen at a dealership on January 29, 2013 in Glendale, California. According to reports the nation's second-largest automaker earned $1.7 billion in the fourth-quarter quarter, the highest pre-tax profit in a decade, up 55% from a year earlier. For the year, earnings slipped 5% to $5.7 billion. (Photo by Kevork Djansezian/Getty Images)

DETROIT (AP) — Ford is recalling more than 680,000 midsize sedans mainly in North America because the front seat belts may not hold people in a crash.

The recall covers certain 2013 to 2016 Ford Fusion, 2013 to 2015 Lincoln MKZ and 2015 and 2016 Ford Mondeo cars.

Ford says heat generated when the seat belt pre-tensioners deploy can cause cables to break. If that happens the belts may not hold people. Ford says it knows of two injuries related to the problem.

Pre-tensioners tighten seat belts when they sense that cars are stopping.

Dealers will inject insulation into the pre-tensioners to protect the cables from heat at no cost to owners. The recall is expected to begin on Jan. 16.

Most of the cars are in the U.S., Canada and Mexico.