MB Extended Warranty - Low Aux Volume
I have the low aux volume issue on my C300. I think a firmware update would fix it, but not sure...I have the Audio 20 system, not command.
I have extended warranty, but the Dealership is being such asses about it....saying it's not covered because I have Audio 20.
I attached a pic of the extended warranty...does anyone see a section that shows the Audio 20 being covered? Specifically there are a bunch of abbreviations in the electronics section (ADS, ESP, PSE, etc) and I'm wondering if one of those is it?
Thanks!!
I have the low aux volume issue on my C300. I think a firmware update would fix it, but not sure...I have the Audio 20 system, not command.
I have extended warranty, but the Dealership is being such asses about it....saying it's not covered because I have Audio 20.
I attached a pic of the extended warranty...does anyone see a section that shows the Audio 20 being covered? Specifically there are a bunch of abbreviations in the electronics section (ADS, ESP, PSE, etc) and I'm wondering if one of those is it?
Thanks!!
From what I can tell there's nothing wrong with the low volume with the AUX port. I also experience this in my C300, and all my research points to this being something that was Mercedes' intent. Probably a "safety" feature so you don't blow the speakers while in warranty. You can go through your radio's settings and make sure "Booster" is enabled, which does make it a lot louder, but this is still a tad too quite when the windows are down and the sun roof is open.
There is a possible workaround though. I've been looking at an AUX amp booster
http://www.newegg.com/Product/Produc...0ZP-003J-00001
Last edited by Skyline45; Jun 17, 2014 at 06:41 PM. Reason: Words
Yeah, maybe it was their intent, but it's really, really low volume. I have the Audio 20 system, not Command, so I don't have the "Booster" option...
Yes, I was looking at boosters as well, those FiiO don't look too promising...I'm probably going to go with Sound Shocker: http://phpaudio.jigsy.com/passive-preamp
I was more wondering if anyone had the firmware updated on an Audio 20 system and if it added that "Boost" option?
Yeah, maybe it was their intent, but it's really, really low volume. I have the Audio 20 system, not Command, so I don't have the "Booster" option...
Yes, I was looking at boosters as well, those FiiO don't look too promising...I'm probably going to go with Sound Shocker: http://phpaudio.jigsy.com/passive-preamp
I was more wondering if anyone had the firmware updated on an Audio 20 system and if it added that "Boost" option?
Last edited by Skyline45; Jun 18, 2014 at 06:44 PM.
If you do end up having to pay for the update it isn't too bad. I think someone said it was around $120 USD? It is important to get it though. Especially if it's a 4matic due to how fragile the transmission is in those models.
Last edited by Skyline45; Jun 19, 2014 at 11:39 AM.
They told me it would cost $150 just to connect to their computer to diagnose if an update is available. What asses.
Mine is manual transmission, so I'm not worried about the transmission firmware update.
Do you know the name of this "main computer"? Is it the ECU? If I can find this listed on the extended warranty documentation, then they will have to upgrade the firmware.
I attached a copy of the relevant warranty paperwork in my first post.
Thanks again for all your help!!
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They told me it would cost $150 just to connect to their computer to diagnose if an update is available. What asses.
Mine is manual transmission, so I'm not worried about the transmission firmware update.
Do you know the name of this "main computer"? Is it the ECU? If I can find this listed on the extended warranty documentation, then they will have to upgrade the firmware.
I attached a copy of the relevant warranty paperwork in my first post.
Thanks again for all your help!!
I did find this:
http://www.mbclub.co.uk/forums/elect...re-update.html
All I could really find on the subject :/ It also seems like there are three different components that can be updated. Navigation, Radio (stuff), and ECU mapping. However, I found that information about the COMMAND system. So it does look like what ever controls the radio is it's own separate update. Meaning the can distinguish between a COMMAND and Audio 20 systems. I'm sorry man, but it looks like you got lawyered by your dealership >.<
EDIT: I've found a thread we're someone in your situation was able to get the dealership to update the firmware. Here it is:
https://mbworld.org/forums/c-class-w...t-feature.html
Last edited by Skyline45; Jun 19, 2014 at 01:42 PM.
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http://www.mbclub.co.uk/forums/elect...re-update.html
All I could really find on the subject :/ It also seems like there are three different components that can be updated. Navigation, Radio (stuff), and ECU mapping. However, I found that information about the COMMAND system. So it does look like what ever controls the radio is it's own separate update. Meaning the can distinguish between a COMMAND and Audio 20 systems. I'm sorry man, but it looks like you got lawyered by your dealership >.<
EDIT: I've found a thread we're someone in your situation was able to get the dealership to update the firmware. Here it is:
https://mbworld.org/forums/c-class-w...t-feature.html
My extended warranty just expired two weeks ago and I took the car in to get checked up, I spoke to my favorite SA one last time about the audio 20 and they gave me the same BS about being clueless. I've tried everything from explaining how it is a fault in the system, to how others have had it done at their dealerships and it solved the issue.
I'm hoping that my Indy shop will be able to flash new software, but I doubt they even have access to it, or at least newer firmware.
At $80+ for a decent amplifier, it's too steep for me to pay for something that shouldn't even be MY problem to begin with...
http://www.mbclub.co.uk/forums/elect...re-update.html
All I could really find on the subject :/ It also seems like there are three different components that can be updated. Navigation, Radio (stuff), and ECU mapping. However, I found that information about the COMMAND system. So it does look like what ever controls the radio is it's own separate update. Meaning the can distinguish between a COMMAND and Audio 20 systems. I'm sorry man, but it looks like you got lawyered by your dealership >.<
EDIT: I've found a thread we're someone in your situation was able to get the dealership to update the firmware. Here it is:
https://mbworld.org/forums/c-class-w...t-feature.html
Yeah, I saw that thread before, but it doesn't really say what module was upgraded....if the module is actually specifically the Audio 20, then it seems as though the extended warranty doesn't cover it.
I notice that my Bluetooth handsfree on the car goes garbled sometimes and was wondering if it's part of the same firmware update...or maybe a different module?
My extended warranty just expired two weeks ago and I took the car in to get checked up, I spoke to my favorite SA one last time about the audio 20 and they gave me the same BS about being clueless. I've tried everything from explaining how it is a fault in the system, to how others have had it done at their dealerships and it solved the issue.
I'm hoping that my Indy shop will be able to flash new software, but I doubt they even have access to it, or at least newer firmware.
At $80+ for a decent amplifier, it's too steep for me to pay for something that shouldn't even be MY problem to begin with...

Yeah, I saw that thread before, but it doesn't really say what module was upgraded....if the module is actually specifically the Audio 20, then it seems as though the extended warranty doesn't cover it.
I notice that my Bluetooth handsfree on the car goes garbled sometimes and was wondering if it's part of the same firmware update...or maybe a different module?
That said, the Audio 20 is not covered under extended warranty, so I had to pay 1 hour of labour ($144....rip off) in order to update it.
But it's done now :-) Time to test it out!
That said, the Audio 20 is not covered under extended warranty, so I had to pay 1 hour of labour ($144....rip off) in order to update it.
But it's done now :-) Time to test it out!


