SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: No audio

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Old Apr 17, 2019 | 05:27 PM
  #1  
wardhill's Avatar
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From: Maine
2003 sl500
No audio

Trying to trouble shoot my radio theres no audio but the screen is fine
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Old Apr 17, 2019 | 08:23 PM
  #2  
timwit's Avatar
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From: Pinehurst NC
2004 SL600 (three of them)
Just to clarify. Is it a volume issue? As in it will tune stations etc but there is no volume?
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Old Apr 17, 2019 | 09:14 PM
  #3  
blueduramax's Avatar
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From: Oregon
2005 SL 500, 2015 Jeep Grand Cherokee
Disconnecting my rear battery for a while renewed my radio when it did the same thing as yours.
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Old Apr 18, 2019 | 08:05 AM
  #4  
wardhill's Avatar
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From: Maine
2003 sl500
I can tune to different station but cant play cds or hear any thing. Tried disconnecting battery that didnt work. I get one red flash on optic loop to cd player but i fell like theres no power to player. Checked fuses 57,66,77 they all looked good
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Old Apr 30, 2019 | 03:28 PM
  #5  
tony4now's Avatar
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2011 C350
Just saw a 2009 CLK320 with same issue, turned out to be a bad amplifier. Open your trunk and if you smell something burning or an unusual smell that may be your first clue, however, not all amplifiers that go bad have a burning smell.
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Old Apr 30, 2019 | 10:18 PM
  #6  
Rudeney's Avatar
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If you smell something burning in the trunk of an R230, I'd worry that it's a bad battery control module that about to catch fire and cause lots of damage.
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