Toyota Motor recalled 370,000 Sienna minivans -- most of those a second time -- because the spare tire mounted under the vehicle might fall off.
And it recalled 10,500 2013-model Lexus GS 350 sedans because the cars, without warning or driver involvement, could suddenly apply the brakes and not illuminate the brake lights to warn following drivers.
Toyota says it knows of no accidents, inuries or deaths involving either defect.
Involved in the minivan recall: 2004-2011 Siennas, sold or originally registered in cold-weather states. Those states use a corrosive salt mixture to de-ice winter roads.
The mechanism holding the spare tire can be eaten away by the salt mixture, and the tire can fall off, Toyota said.
In April 2010, Toyota recalled 2004-2010 versions of the van for the same problem.
At that time, a splash shield was mounted underneath to deflect the corrosive de-icing mixture away from the spare, and rust-inhibitor was applied.
Some of those shields were installed incorrectly, Toyota said, and might not work, and the rust-inhibitor might be ineffective.