I have a 2010 Sahara 200 series landcruiser with 120,000 on the clock, does a fair bit of off road work pulling a trailer. Problem: occasionally it is sluggish between first couple of gears, i.e. you put your foot down and nothing happens until you hit 3rd and it takes off. Mechanic had a look and couldn't fault, no error messages or comp faults recorded. Any ideas appreciated.