Two problems related to engine have been reported for the 2008 Lexus LS460. The most recently reported issues are listed below.
2008 Lexus ls400. Consumer states vehicle does not always accelerate properly and has been unable to start on two occasions after long trips. The consumer stated he received a recall notice in the mail, but was informed the parts would not be available for several weeks.
Continuous acceleration with foot off accelerator pedal currently as of 3/21/10. Vehicle will not slow down with foot off accelerator maintains speeds of 20-24 mph with foot off the accelerator. Slowing down the vehicle will lurch from 2nd to 1st gear while trying to come to complete stop followed by a clunk from transmission. Transmission will downshift while coasting then rpm's will jump giving a slight acceleration feel and continue at speeds of 20+mph until brakes are applied. Experiencing harsh and sloppy shifting from transmission. Loses power and will not kick down or will finally kick down and not let go of gears then will up shift and the rpm's will spike. Dealer has lubed drive train and flashed transmission in attempts to correct the problem. Only occurs while a/c compressor is on. Dealer at a loss for a fix, requested I contact Lexus to open a case. Contacted Lexus, no response. Factory carpet mats are clipped in place, nothing obstructing accelerator pedal.