Hello everyone and sorry for my bad english.
I have a problem with my W212. After driving about 30-40 km and taking a coffee brake and then going back on the road, the car is changing gears very slow at about 3000 RPM+ and not more than 4th gear. When I try to overtake a car in front of me it doesn't let me and it seems it have not enough power to do that. I need to go into manual mode and change gears but also it's changing slow. Last time on a longer trip of about 400 km I noticed that the Engine Check sign also appeared with orange color.
Also, it seems that if I stop the car and turning off and on again, then it's working until the next stop.
I bought the car as new from Germany, now with 99.000 km on board since 2014, service made every year at the MB dealer and also gear transmission oil changed last year.
Has anyone else ran into this or heard of this before?
Thank you very much.

Sounds like the car is going into "Limp home" mode, you will have to get it on a scanner to pull the codes, might be the transmission conductor plate. But I'm guessing.

Thanks for your answer

I had a similar issue in my 07 S550, it was the conductor plate and I replaced it and everything was fine. I bought the ICarsoft MB2, it does a good job telling me whats going on, obviously not like MB star but at only 120.00 US gets me the codes I need to make an educated guess at least!

Hi there
My E350 did not want to shift. Only 1st or R. Scanned it and had TCM P2725 code. So we replaced oil and filter. Nothing.
So we replaced the solenoid. Reset the TCM and the car was fine.
Drove about 1000km and had the same problem.
Swopped out the solenoid again and reset the TCM. Everything was fine. The next morning it was back. So I just did a reset
again and it was working fine for the whole 20 minute test drive. Later the evening tried again and its back again.
1. What could be the cause?
2. I have another 722.9 transmission. If I were to swop the valve block with TCM, is it easy to program it to the ECU?
I have read that the TCM sometimes gives problems and that I have to put the original TCM on the 2nd valve block.
Any thoughts?
3. Or should I swop transmissions? Reprogram?

I live in a small town, one guy own an Autel MS906BT. Maybe to program it.

Any ideas, advice welcome.

JS