My one was 110 ps up't to 125ps with the tow/load button & changed the gear pattern.
They are not classes as an automatic, they have 'clutches' not a torque converter.
I drove for a year manually before giving in & getting an actuator. (yours has the improved/rectified version)
You need to be carefull to have a good battery,
& a faulty brake light can cause a gearbox default.
They have engine sensors everyplace so needs good oil & correct antifreeze mix to keep temps right.
Dont use Laidlaws or A.M. Phillips, they are clueless.
Mo-Tech in Forfar if you need anything, he has the experience now.
Great van when running properly.
I hired a Jumbo to try against mine to find how they should change gear,
something else driffting one of them.
Give me a shout if i can help anytime.
cheers
george