Have Mercedes Questions? Ask a Mechanic for Answers ASAP
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received 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.
The first thing that needs done is to check and make sure the main battery has a good charge in it.If the battery is weak or dead at all this will cause this fault here and the battery will need re charged or replaced to correct this fault here.If the battery has already been checked and found to be o.k. the common component that can fail and cause this issue is the ISM (electronic shifter module) on the side of the transmission itself.I will send the service you are requesting here.
If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.