The automaker also said it had begun contacting U.S. owners of the 2010 GX to arrange to update the software that controls the system in their vehicles. The problem does not affect earlier models.
Earlier this month, Toyota had said it would recall 9,400 Lexus GX 460 SUVs from the 2010 model year to correct a problem that could lead to a loss of control.
The stability-control problem was first identified by Consumer Reports magazine, which issued a blanket warning urging drivers not to buy the vehicle. Toyota suspended sales of the SUV on April 13, following the Consumer Reports warning. The automaker said it was providing GX owners with loaner vehicles until theirs are fixed.