Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi, you should only use the Mercedes fluid when servicing the transmission. The transmission has either red or blue fluid. The red fluid is part number 001 989 68 03 13 and the blue fluid is 001 989 78 03 09. You will need between 5 and 6 liters when refilling. Click on the procedure below. A small amount of sediment is normal. Ideally there should be no black soot when you wipe the pan with your finger. If you would like to upload a picture I'll take a look at the sediment.
Hi, sorry for the wait. I got busy in the shop and didn't see that you replied to me. If the vehicle production date is prior to 06/21/2010 use the red fluid. After that date use the blue fluid. I've attached the document for identifying the transmission pan. You should have the newer style pan. Check the fluid at 45°C. You should be fine at 40°C. I'm not sure which module you are referring to. If it's the selector module on the left side of the transmission there is a seal behind the module that is replaceable.
Click on the link below.