M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

Weird COMMAND audio issue

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Old Oct 26, 2022 | 05:37 PM
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2006 ml350 w164
Weird COMMAND audio issue

Hey guys. So I’m starting to pull my hair out over this issue. My left front door speaker doesn’t work but the upper tweeter works. Ive already tested this speaker on the right door and it works perfectly so I know the speaker isn’t the issue. All the other lower door speakers however sound as if they have little to power. They are hardly audible. Yet the center dash, rear cargo, and subwoofer all work perfectly and loud. Already tried a new command radio unit. Tried a new amp. Problem still persists. On my scanner when I check the most ring wake up wire I get no response from the sound system module. And when I test the speakers through my scanner it comes up with a bad left lower front door speaker. I’m sorry this is obviously extremely confusing but I won’t let this defeat me! Any advice on this system is welcome. Thank you in advance !
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