I'm assuming you are talking about the CVT transmission. If so, you are right. There is no dipstick on this transmission. There is a filler and a drain plug on the transmission.I have a 2014 Versa that was in an accident. The radiator leaked the transmission oil. Radiator has been replaced but the car wont run. When I placed the car in "D" the car will only advance just a couple feet and stops. I was told by the mechanic I need to add transmission fluid. Please help, the car has not been moved in weeks. Please post a pic to where I check it. I know where the transmission pan is at. I know where the drain plug is at. But I need to know where to add oil. I have the oil pump, I also got the CVT transmission oil. These days cars dont have dipsticks.
I picture of a 2013 versa is the same as mine.
Check out this link for the service manual - Section D - Transmission/TransAxle page 17
Nissan Versa Factory Service Manuals