BMW has recalled nearly 1 million vehicles sold in the U.S. because they may have an electrical short that could cause an engine fire.

The recall affects several different vehicle models from the 2006 through 2013 model years.

According to the recall notice, the affected vehicles have a blow-by heater that could short-circuit and lead to overheating. This could cause a fire while driving, soon after driving, or when the vehicle is parked, BMW said.

According to the automaker, the blow-by heater “may not have been produced by the supplier to specifications” following a number of reports of a “thermal event” in vehicles that were recalled and repaired.

While a remedy for the recall is still currently being developed, BMW said it expects to mail recall notices to affected vehicle owners on April 25.

The new recall from BMW supersedes and expands two previous recalls made by the company in 2017 and 2019 where vehicles will need to come back for repairs. BWM has expanded the third recall to also include 2012 and 2013 vehicle models.

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BMW of North America. GETTY IMAGES NORTH AMERICA / SPENCER PLATT