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

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Old 04-17-2019, 05:27 PM
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2003 sl500
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Trying to trouble shoot my radio theres no audio but the screen is fine
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Old 04-17-2019, 08:23 PM
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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 04-17-2019, 09:14 PM
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SL 500 Hardtop Convert
Disconnecting my rear battery for a while renewed my radio when it did the same thing as yours.
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Old 04-18-2019, 08:05 AM
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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 04-30-2019, 03:28 PM
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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 04-30-2019, 10:18 PM
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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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