Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.
In some cases the battery needs disconnected for around 5 minutes to reset the radio/head unit or command unit as it is called.If this does not work usually it is the command unit needing replaced to correct this fault here.I have seen some of these fail requiring replacement for this issue here.This will need tested to be sure.
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