How do you check sealed transmission in Nissan Altima?

To check the sealed transmission in a Nissan Altima, first, ensure the vehicle is on a level surface and the engine is running at operating temperature. Locate the transmission dipstick or fill plug; some models may not have a dipstick, so you might need to remove the fill plug. If fluid is present, it should be at the proper level and have a reddish color without a burnt smell. If the transmission is sealed and you can't check the fluid level yourself, it's best to consult a professional mechanic for assistance.