Hey I had massive problem with my gear box which resulted in replaceing the whole clutch line this was ment to be under warranty but i still had to pay half of everything was ment to take it to department of fare trading but got lazy and didnt do so. Toyota will try and dodge you out of any warranty with them bottom fact is if it breaks within warranty it should be replaced at there cost only exception is for parts like Clutches, brakes which cop abuse 24/7 but evan this can be disputed and toyota need to provide proof the problem was caused by incorrect use or operation of these parts. First step is to have a independant report done on the problem then a report done by toyota after you have both reports tackle toyota head on over a warranty issue this will tighten the loop holes which toyota try and use when voiding warranty. Hope this was a help Regards Jas