Have Mercedes Questions? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
Code U0155 usually indicates a loss of communication fault with the instrument cluster itself.With what is occuring here and this code being set this sounds like the instrument cluster itself is at fault here needing replaced to correct this issue.I have seen the cluster fail in the past before requiring replacement causing this issue here.
When it is replaced it will need to be set up and programmed by a dealer with their SDS machine unfortunately in order to work and has to be replaced with a new one.
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.