Mercedes Repair 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.
This can be due to a fault with the micro phone or a software update that is needed by a dealer.Being a 2017 model you should be able to get this diagnosed and repaired at a dealer at no charge to you under factory warranty.They will check for any software updates as well as see if the microphone needs replaced or possibly reseated.This is the best option here since it is under warranty.
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