Hello Mercedes Forum
I would like to take the time, to thank you for allowing us to get access to all this useful feedback. Unfortunately I have been dealing with some mechanical issues myself.
I have a 2003 Mercedes E500 with 175k miles, I has a rough start, but runs. When I put it in gear it moves as desired. After running for 10 minutes, it's the opposite. Shifts perfect but wont move when gas pedal is being pressed. Similar as it was on neutral but its really in gear like D or R as per say. Rpm's move forward when pressed on the gas pedal but the vehicle doesn't! Any in sight on this issue. I'm sure this isn't un heard of any fed back would be highly appreciated. Thank you everyone in advance. Hope we finally get the solution for us Mercedes owner's

 

I'm having the same issues. Ran great yesterday but today wont move faster than a turtle and seems like it wont upshift to 2nd and 3rd has the rpms rev to about 4k. Im wondering if the wiring harness issue is finally rearing its ugly head.