Toyota is temporarily halting sales of the 2010 Lexus GX 460 after Consumer Reports issued a rare “Don’t Buy” warning amid concerns the large SUV has handling problems that could cause it to roll over during sharp turns. Toyota has asked its dealers to temporarily suspend sales of the SUV while it conducts its own tests on the GX 460. Toyota has taken much criticism to its reputation after the recall of millions of cars and trucks over gas pedals that are too slow to retract or that can become stuck under floor mats. The GX 460 is not covered by the pedal recalls. Toyota is attempting to respond more quickly to safety concerns after federal investigators accused the automaker of dragging its feet on recalls to address the faulty gas pedals. Toyota faces a $16.4 million fine from the Transportation Department and has until April 19 to decide whether to contest the penalty or accept it. Toyota said about 6,000 GX 460s from the 2010 model year have been sold since the vehicle went on sale in late December and an estimated 1,600 of the SUVs are at dealerships.