Several Ford pickup truck customers report a faulty “blend door” in their car’s temperature control system that either renders their heat or air conditioning inoperable. In situations where it is the heat that is inoperable, drivers may face dangerous situations in sub-freezing temperatures as the windows of the vehicle would not defrost, leading to dangerously low visibility. Affected vehicles include the 2005 F-250, the 2007 F-250, the 2011 F-150, the 2011 F-250, the 2012 F-350, the 2013 F-150, the 2015 F-150, the 2014-2017 Fiesta ST, and likely other models as well.

Ford appears to be replacing the vehicles under warranty, though some customers report experiencing the same problem with their repaired vehicles.

GM faced a lawsuit in 2021 alleging a similar problem in Chevrolet’s Escalade, Silverado, Suburban, and Tahoe vehicles, as well as GMC’s Sierra and Yukon vehicles.