Dipstick how do your fill the trans on a 96 cabrio with no dipstick?

Automatics have a fill tube on the upper part of the transmission (facing the front of the car). Fill with Castrol full synthetic ATF +4 or VW special ATF ONLY!!!!! Fill on level surface with engine transmission temp at approx. 120 degrees (drive it around for 20 minutes, then wait 5 minutes to fill until overflowing).

That being said, the transmission, per VW, does not need a fluid replacement unless it is leaking.

If it is an automatic, which I assume it is since you're looking for a dipstick, it needs a special fixture to add fluid(Dealer or foreign auto mechanic) or check level. If it's a manual trans, there is a check/fill plug on the end of the transmission behind the driver's side front tire, probably takes a 17mm internal hex head socket. Use 75W/90 gear oil, filling the trans until oil just starts to overflow through the hole.