If the car is sluggish and doesnt change gears (always in gear 3, manual or auto), and there is an AT Check light on the dash, the gearbox is in limp mode and something is wrong.
Manual control is very unresponsive even when working properly. So are you able to run through any of the gears in manual? does it change in auto-mode? Is the car set in Snow-mode or Fast-mode? (theres a small switch next to the shifter.
for normal 4-speed auto (RE4) a Dex III (3) oil is fine, or Nissan matic-D.
file sent.
Hopefully ill get a chance to re-write the translation document. its pretty poor.