Add Transmission Fluid on 1995 BMW 318i

How do I check and add transmission fluid to my car.

Asked by for the 1995 BMW 318i
Transmissions are filled at factory for life of transmission. There is no dipstick to check fluid level from engine compartment. Fluid is checked from underneath vehicle. Ensure vehicle is level and transmission fluid is cold ( 68F to 86F , 20C to 30C) Some transmission models have an oil plug located high on side of transmission oil pan. Oil from filler plug will leak out when removed. If oil spills from filler plug, transmission is full.
Thanks so much.
1 more answer
You need to take it to a mechanic and have them check as the transmission is a closed system, it's best not to mess with the tranie, have a certified mechanic take a look.