Have the whole suspension checked by suspension specialist today, they put the car on machine to test the shockers. the result is that the left front shock scores 62 while the right front shock scores 23, so the right shocker has a failure inside the tube,by the way, the bushing rubber etc are all good. Noticed that the shocker are made by sachs in Spain.
car only runs 20000km, and the shocker is gone, shouldnt happen on a lexus. I will go to dealer with this report, if they dont change it , I will find aftermarket coilover set like bilstein or ohlins, anyone has other suggestions?