Three automakers have issued recalls that affect more than two million vehicles on the road.
Hyundai has recalled 2007 through 2011 model year Hyundai Accent, Elantra, Genesis Coupe, Santa Fe, Sonata, Tucson and Veracruz.
KIA is recalling its Optima, Rondo, Sorento, Soul and Sportage.
U.S. safety regulators say the vehicles' cruise control may not turn off when the brake is pressed, and a faulty switch can prevent the vehicles' brake lights from illuminating.
More than 200,000 Subaru Legacy and Outback all wheel drive vehicles are being recalled due to problems with brake lines.
The recall affects models from 2005 through 2009 sold in cold weather states where salt is used to clear roads.
Documents released by officials at Subaru say salt may cause the brake lines to rust and leak.
There is no word on whether the problem has caused any crashes.
Those three automakers have said they will contact customers about free repairs.