YES IT HAS A STRAIGHT CAP WHY I WAS WONDERING NEVER SEEN ONE THAT JUST DIDNT HAVE A DIP STICK IS THERE A PART NUMBER I VCAN ORDER TO REPLACE THAT CRAP DO MERCEDES OWNER NOT WORK ON THERE OWN CARS OR WHAT
Please don't shout, we can hear you fine. Please also take a minute to click the User CP link and complete your BW profile re: vehicle and location as that is useful information to have.
Your vehicle shipped from the factory with a tamper-proof seal on the dipstick tube and a transmission that was marketed as "maintenance free" (This is noted in the manual).
Most folks have chosen to change the fluid anyway. You can DIY if you like but you will have to purchase special MB fluid (9 L at around $15 a L) and drain the trans and converter, and you'll also have to purchase the special dipstick tool (available on ebay or you can pm member ohlord who sells them with a pan magnet and changing tips). Measure what you drain out and fill that much back, then set the level for 25C on the dipstick tool. Start the engine and with foot on brake, run it through P R N D L stopping at each for a few seconds, then back to park, then reset the 25C level. Remove the Dipstick tool, then go for a drive, 20 - 30 miles, then set the level for 80C on the dipstick tool. Remove the tool, reinstall the cap with a new locking pin and you're done.
More information in the 202 forum, check there as it is specific to your model. For the older models like yours there is also a pressure regulator spring that can break, and be sure to check the adapter/connector on the front right of the transmission as it is prone to leaks, may as well kill all three birds with the same 9 L of fluid.
Take care and enjoy the ride,