DEARBORN, Mich. — Ford will update software on 2013 Escapes and Fusions to stop their engines from overheating, a problem that has caused a small number of fires.

Reports of nine fires prompted the automaker to recall more than 89,000 of the SUVs and mid-size cars in the United States and Canada last month. No injuries were reported, and only models with 1.6-liter turbocharged engines were recalled.