Gentlemen, if you have a problem with the lack of power and after turning off and on everything returns to normal, first CHECK THE TURBINE SETTING, in om642 engines it is a typical ailment, the electronics fail, and the car goes crazy, you can handle it yourself, because it is not difficult and do not listen to the specialists that the turbine to be replaced, I have 3 mercedes cls e class and vito in 3.0 cdi and in 2 of them I had this ailment, there is a video on YouTube how the boy explains what and how, and stka will not show you, you can do a test and everything comes out ok and the car continues to drive like a Dacia
greetings to Mercedes fans
