Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.Mercedes released a service bulletin back then that dealt with the type of problem you are describing that my very well be the problem you are having. I have enclosed the bulletin in the link below, copy and paste the link to your browser to open and view it.https://dl.dropboxusercontent.com/u/104923897/Mer%20TSB%20DEc%2010.pdf
Its located on the LH side of the engine compartment. See the link below for location.https://dl.dropboxusercontent.com/u/104923897/ECU%20Dec%2010.pdf
Yes if this is the problem then that where you need to check. Unplug each plug and look for any signs of corrosion and or moisture.
Your very welcome and thank you as well. Please take a moment to rate my service so I can get credit for my time, the question remains open for follow up even after doing so, all you need to do is return to this question if need be.Thank you again.