W211 sound issues
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Newbie
Joined: Apr 2022
Posts: 13
Likes: 7
W211 e500
W211 sound issues
So i have a strange issue that i can’t get to the bottom of. I have the 810 option on my car wich means i have the harman kardon audio system, basically there is a strange radio static no matter what i do, radio and an fm modulator both having this issue, the vocals just sound like there was radio interference or something , i have already checked the antenna amplifier and other basic things but i have no clue to where to even start looking , maybe someone has an idea 
Junior Member
Joined: Nov 2014
Posts: 19
Likes: 3
2007 e350
Following this--I have the same issue. Everything sounds like bad radio static. And I'm sure it's not the antenna because I have an old iPod hooked up to mine and it still sounds the same. Car's been sitting for 2 years and I don't know if some wiring went bad.
Thread Starter
Newbie
Joined: Apr 2022
Posts: 13
Likes: 7
W211 e500
going to do some research on the audio gateway and head units .
Thread Starter
Newbie
Joined: Apr 2022
Posts: 13
Likes: 7
W211 e500
Thread Starter
Newbie
Joined: Apr 2022
Posts: 13
Likes: 7
W211 e500
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Thread Starter
Newbie
Joined: Apr 2022
Posts: 13
Likes: 7
W211 e500
i checked the agw , the amplifier its self was loose from the bracket , i removed the bracket , tightened the agw , then removed the plug as instructed and tested resistance , showed me 0.04 ohms , since it was nothing close to 1 ohm i put everything back together thinking that tightening the agw would fix this issue , and that it was the reason that the ground was bad or something but still no, the issue persists.
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Member
Joined: Jun 2017
Posts: 95
Likes: 24
1991 300D, 2006 E320 CDI, 2014 E250 Bluetec
I have the same issue. For me it's with both radio and using the 3.5mm input. Extremely annoying. I took it to Best Buy but they wouldn't touch it...said I need to take it to someone who specializes in Mercedes audio....or the dealer. So for now have given up and am just using a Bluetooth speaker.
Thread Starter
Newbie
Joined: Apr 2022
Posts: 13
Likes: 7
W211 e500
I have the same issue. For me it's with both radio and using the 3.5mm input. Extremely annoying. I took it to Best Buy but they wouldn't touch it...said I need to take it to someone who specializes in Mercedes audio....or the dealer. So for now have given up and am just using a Bluetooth speaker.
the audio i have from cd is amazing , but radio is really terrible
