What is the main problem if my LS400 engine won`t start? Battery is good. horn, lamps, audio, all good. All of them will turn on when key is in on position. But when i turn the key to start, the engine won`t start (there is normal engine stater crank sound). Another strange sound is the whinning sound from vvt-i actuator? is my vvt-i actuator broken ?

Have a look on the US site loads more info in there LS section

http://us.lexusownersclub.com/forums/

chips.