Can you show me where the automatic transmission dipstick is on a 1085 300 D turbo diesel Mercedes?

It's on the passenger side of the engine toward the back. It has either a red or black cap. To check the level, warm the engine to operating temperature and let it idle in Park for a minute or two. Take a lint-free cloth (this is not optional) and wipe the fluid off the dipstick. Stick the dipstick back into the tube and push it down all the way. If the fluid is low, add more (about 4 tablespoons at a time, because if fills up fast!).