S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

2007 S550 Radio Issue

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Old Mar 25, 2018 | 11:33 AM
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From: new haven indiana
2007 Mercedes Benz S550
2007 S550 Radio Issue

Hello New Here and having an Issue With Command Unit i Believe.
Has No Sound, Took it to the dealer and they said it was a "Tuner amp Module "
I Then Asked The Mechanic he said the amp in the trunk.
Everything i have read points to the command unit in the dash. No Station list ect.
Anyone Have Any Ideas on this?
Thank You.
Smitty

Last edited by Smitty9211; Mar 25, 2018 at 11:45 AM.
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Old Mar 25, 2018 | 12:05 PM
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Dealer should have provided invoice with narrative and supporting fault code(s) to justify amp replacement. If/when confirmed, post or PM VIN for compatible replacement part #s, see attachment to remove left trunk panel if interested in DIY.
Attached Files
File Type: pdf
Remove paneling in trunk.pdf (311.2 KB, 115 views)
File Type: pdf
Main audio components.pdf (327.1 KB, 136 views)

Last edited by konigstiger; Mar 25, 2018 at 02:05 PM.
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Old Mar 25, 2018 | 12:17 PM
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this cost 119.00 and cant find any part named tuner amp module


Last edited by Smitty9211; Mar 25, 2018 at 12:20 PM. Reason: price
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Old Mar 25, 2018 | 02:04 PM
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Although no fault codes are documented narrative clearly defines amp is malfunctioning. Pull trunk panel and visually inspect amp if all seems fine need your VIN to provide part #(s) for DIY replacement.
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Old Mar 25, 2018 | 02:26 PM
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check to see if there is water in the amp, its possible
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Old Mar 25, 2018 | 04:16 PM
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Originally Posted by konigstiger
need your VIN to provide part #(s) for DIY replacement.
Unsure what you mean about this part.


also i had watched
and at the begining he talks about the radio station info not showing up and that is the same as my car.
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Old Mar 25, 2018 | 04:33 PM
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Originally Posted by mbdr
check to see if there is water in the amp, its possible
no water but i did look at the main amp board .. the black stuff on the board is right below the fan and unsure if its the problem . it doesnt look great but i do not see anything burnt.

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Old Mar 25, 2018 | 04:57 PM
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Originally Posted by Smitty9211
Unsure what you mean about this part
If you decide to replace amp and want to purchase replacement you will need part number to shop. You can shop part number listed on your amp but there are compatible part numbers that may be available to widen your search for best pricing only way I can provide these additional numbers is with your VIN - your call.
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Old Mar 25, 2018 | 04:59 PM
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Originally Posted by konigstiger
If you decide to replace amp and want to purchase replacement you will need part number to shop. You can shop part number listed on your amp but there are compatible part numbers that may be available to widen your search for best pricing only way I can provide these additional numbers is with your VIN - your call.
oh sweet ! WDDNG71X17A016160
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Old Mar 25, 2018 | 05:07 PM
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Attached Files
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WDDNG71X17A016160.pdf (71.6 KB, 108 views)
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Old Mar 25, 2018 | 05:47 PM
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so any of those part numbers are ok to replace it with? also what do you think about sending it in to be repaired? i found several sites that do that cheaper then the 700.00 for a used amp. and do i need to have the new one coded. the service adviser said 300.00 if it needs to be coded.
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Old Mar 25, 2018 | 08:58 PM
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dealer programming is expensive as hell
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Old Mar 26, 2018 | 11:20 PM
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2008 S550
Originally Posted by konigstiger
Although no fault codes are documented narrative clearly defines amp is malfunctioning. Pull trunk panel and visually inspect amp if all seems fine need your VIN to provide part #(s) for DIY replacement.
Amp is tact but no sound
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