
Transmission problems
Hello everyone, in advance I'm sorry for my English, I'm from Germany and use the translator, I have the following problem with my E-class year of construction 2009 E350 CGI almost 140,000km, the gearshift goes to idle while driving, I could observe how it jumps from D to N and back to D, but the car then drives at idle, I can't get the gear in anymore, I have to stop restart the car first and then I can drive again, I have already replaced the control unit ISM and changed transmission oil, the error comes sporadically, it has no specific pattern, it may also be that the error does not occur for months, unfortunately I am a little desperate, diagnostic device does not display an error