It’s T, actually. I always accelerate the tank with Q/E myself because of cruise control, which is gear control in manual, so it’s pretty easy to notice when you’re in the wrong setting that way.
Also, if you are stoped, press E twice and the CC for the gearbox Ill go to level 2 ,(Check on up corner left) i got free from holes that way, some how it seams the tank have more torque that way.
The manual is CC at 0 and you gear with e and q
Auto is level 1 or 2