Two problems related to transmission solenoid have been reported for the 2006 Mercedes Benz E350. The most recently reported issues are listed below.
Having returned from a weekend trip, I started the vehicle and let it warm up for a few minutes. Put the gear selector in drive and off I went, so I thought. My vehicle was actually in limp mode. Several minutes later a check engine light with code p2725 "pressure control solenoid e electrical". In other words, conductor plate and valve body. This is a common problem with 722. 9 transmissions. I had the transmission serviced by a mercedes dealership on 6/27/2013, transmission flush and new filter ($553. 38). Three months later, boom! kaput! limp mode! valve body toasted! dealer quote of $1800 and $2100 to replace valve body. This is a common problem. Mercedes should foot the bill.
I had my car maybe 2 months before I started having problems transmission first they said a transmission module was burned out and it had a recall I took it back several times I wasn't notified of this issue but kept having it. (park place dallas) then I took it to austin they worked on it several times same issue now Nov the issue was so bad I was going down the street 25 mph couldn't go any faster and when they picked up the car they said they couldn't find it but a solenoid switch had burned out I thought it was the heater they said it was a recall on this part also 3 weeks later burning again dragging again when driving they said the solenoid switch recalled again. They kept the car until 2/25/2008 since christmas eve . I called corporate and they had a rep who contacted mercedes of georgetown ,TX their resolution was for me to pay another 15-20 thousand dollars and they would give me a new vehicle . I called an attorney who said they could switch VIN numbers with my lender and replace this junk that I am driving. I came to mercedes looking for a dependable car gave them $20,000 down on a $58,000 car thinking that for at least 7 to 8 years for this price I would have a dependable car this car is junk why must I continue to add on to my payment due to their mess every item recalled has been recalled at least 2 times it's also not fair they didn't notify other buyers what will they do when they no longer have warranties .