PeachParts Mercedes-Benz Forum - View Single Post

jay_bob · #3 06-26-2017, 07:00 AM

Yes to all the above. I just did a fluid/filter change on my E300 this weekend.

You do need the special dipstick tool to read the fluid level. There is no internal level sensor in this transmission. According to the FSM you have to be at 80C but I did not see any +/- tolerance on that requirement.

Also I forgot that the NSS and temperature sensor were the same wire, and I thought I had an off scale sensor until I remembered it has to be in a driving range to work. The HHT emulator display has a line below the temperature that says RD4321 and it's trying to remind you that the sensor is open circuit in P or N.

One other thing you want to make sure to do is go into the fluid life screen and reset that. For bonus points reset your adaptations and get the transmission to re-learn how you drive. With the new fluid the transmission will behave differently. I noticed a marked improvement in the smoothness of the shifts after doing this.

My fluid had about 90 k miles on it, so it was definitely due for a change. However the pan looked great, there was very little wear material in the bottom of the pan.

If you drain the torque converter you will need about 8 liters +/- to totally refill.

Also another tip. The Xentry will think this is a later 722.6 and will try to talk to it via a method not supported in the E300. You have to cancel out after it gives you the communications timeout message. At that point you will be presented with a choice for 722.6 with HHT. You want that selection, which brings up the HHT emulator.