JakubUk

Hi all,

I have a problem with my Mercedes S Class w221 2008. I bought a car a few days ago and I found out that there is no sound and no radio station in my unit. First I have checked amplifer and everything in the back. There was some rust and amplifer was broken. I bought a new one and cleared everything.

However nothing changed and it is the same problem. I am thinking it should be something with fiber optic, but i have no idea how to check if the fiber optic works fine. Only one light blinks on the connector to the amplifier.

Can somebody help me with that?

Thanks

Keagan-Z06

Old thread but I got the same problem now. Just ordered the loop and I’m hoping it’s just the voice module and not the amp. No sound and no radio stations. Can’t tune to a radio station either.

BOTUS

Every W221 ever made has the broken Tuner Amp issue in the boot at some point in the car's life - it was designed with this capability

BOTUS

he never came back - he likely bought another broken one second-hand, in an attempt to try and replace the one he had, on a budget.....

you can't loop out the AMP is part of the system

Keagan-Z06

From the little I understand, the amp is the only thing you can’t loop out.