won't start

If the starter is running but not turning the engine, you could have a starter drive failure or possibly a too-low voltage condition due to battery or charging system problems. If the starter is turning the engine but is just sounds like loose spinning, you may have had and internal engine failutre. Get someone to crank the engine while you look under the hood to see of the engine is turning at all. See a Toyota or Lexus specialist or an auto electric shop for further advice. Here's a directory link for you: http://repairpal.com/lexus-repair-in-fairburn-georgia