I can't believe it is broke, don't think there has ever been a Lexus gearbox that has failed, I could be wrong...........Take it to a garage and change the gearbox oil. What's the mileage, has it been changed before?
its a 96 plate with 146k on the clock i don't know whether its been changed before but i shall give your suggestion of changing the oil a try i have just checked the dipper and it doesn't appear to have any oil left in it!!!!!!!!!!!!!!!!!
where did it all go??/??