Mercedes Benz 2009 S550 4matic No Audio sound

I'm having problem with my 2009 S550 4matic. When ever I tried to play something on my system no audio is coming from fm/am, satellite radio, CD player or DVD. I have changed both the battery. Still same issue. All the buttons are working display screen working to. But I'm getting no sound out of my speakers. I have Harmon Kardon 7.1 in the car.
Please anybody can help.
What is this problem how we I can fix it
Thank's in advance.


user profile image
codyholder made a comment.
1 year 6 months ago

Check the following fuse.
Interior Fuses Right side of the dash F1/6

Fuse Number Ampere Rating Designation
F77 50 Sound Amplifier A2/13

I had the same problem with Honda factory amplifier. The radio powered up fine, but no sound came out.

user profile image
maciek made a comment.
9 months ago

I have the same problem, did you fixed your radio ? If yes what was wrong with it. Seems like my amp is not getting any power because the fan isnt spinning 


Add new comment

The content of this field is kept private and will not be shown publicly.