U660E(V6) & U760E(I4) transmission family is easy to service.
Level check requires temp, besides level service, at no load idle.....
Large left side bolt for fill. I can usually get to it from top/bottom with removing inner fender panels, working blind by feel. Overflow and drain plug in pan, but some don't have a drain plug. If you have only one plug in the pan, its the overflow level check, and you will have to do a cooler line flush. Get new washers for the plugs at the dealer and have a torque wrench to snug fill and overflow plugs properly.
IR gun or tape thermometer work just fine for a level fluid check.
Any ATF that mentions WS can be used.