my howto: CLEAN wiring of the hidden AUX in Glove compartment for under $2
Newbie
Joined: Sep 2010
Posts: 3
Likes: 0
2009 C300 Sport 4matic
Thanks so much for posting this how-to! I hated the fact that I couldn't use my iphone to play music and make calls at the same time, not to mention that the dash controls don't work right for playing music on the iphone. In fact, I was gonna order a 160-gig iPod just for this reason. Now I have a much better solution. Also, kudos for the site to order the cables from. Just ordered both and can't wait to install it! 
Last edited by TheSeeker; Sep 9, 2010 at 08:05 PM.
Junior Member
Joined: Nov 2008
Posts: 65
Likes: 0
C300
I just did it last week follwing your post. But the Aux input volume is very low! When I set the volume at normal level for CD and radio, I cannot hear anything from Aux. Do you have the same problem? How do you solve that? Thank you
Junior Member
Joined: Apr 2010
Posts: 74
Likes: 2
From: Boston
2010 E550
There is an option through the radio to set volume from AUX as regular or boost (I think that's what they call it). It will set your volume higher by default.
Junior Member
Joined: Nov 2008
Posts: 65
Likes: 0
C300
Thank you. but I dont see it in the menu. What's the model year of your car? Mine is 08. I saw another post saying that MB has added this option on the new firmware. Does anyone know if I can update it at dealership?
Junior Member
Joined: Apr 2010
Posts: 74
Likes: 2
From: Boston
2010 E550
I don't know anything about upgrades from the dealer.
Newbie
Joined: Sep 2010
Posts: 3
Likes: 0
2009 C300 Sport 4matic
Surface Mount Audio Jack
If anyone's interested, instead of the marine-grade jack, there are many surface-mount 3.5mm audio jacks that sit flush with the console. This is the route I plan to go. If you search for "3.5mm Stereo Panel Mount Jack" on google you can find a bunch, such as this one from vetcosurplus.com:
or this this one from datapro.net that doesn't require any wiring.
Just FYI.
or this this one from datapro.net that doesn't require any wiring.
Just FYI.
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Thread Starter
Senior Member
Joined: Oct 2009
Posts: 291
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From: MD
'09 C350
MB is kinda slow on technology.... even with the iPod integration adapter, it sounds the same. AUX / iPod Cable are both play as analog.. CDs and other media format we have on our car is played Digitally. so it's not ur car, it's just the way it is... but i still like the AUX better than iPod adapter ( more control over searching music and the EQ.
and also just turn on your ipod volume up to 98%
Thread Starter
Senior Member
Joined: Oct 2009
Posts: 291
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From: MD
'09 C350
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,308
Likes: 62
From: Bethesda, MD
2000 SL500
sorry to bring back an old thread..but I just ran an aux cable all the way through and had the cable go through the glove box in the middle..that way there is never any cables exposed and it looks like its from the dealer...there is a hole if you remove the thin carpet thats on the bottom of the glove box, I didnt have to take out the air vents, center console, or anything
Senior Member
Joined: Jun 2003
Posts: 433
Likes: 2
From: Los Angeles
2008 C300 Sport Sedan: Panarama Roof, P2, Multimedia
With the popularity of smartphones and bluetooth a2dp, I'm looking into a wireless solution.
Has anyone looked into getting a bluetooth 3.5mm receiver to hook up to the auxiliary?
See below:
It goes for about $20 on eBay. No wires, and you can hide the receiver in your glove. Only bad thing is that you have to charge it every so often or hard wire power to it.
Has anyone looked into getting a bluetooth 3.5mm receiver to hook up to the auxiliary?
See below:
It goes for about $20 on eBay. No wires, and you can hide the receiver in your glove. Only bad thing is that you have to charge it every so often or hard wire power to it.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,308
Likes: 62
From: Bethesda, MD
2000 SL500
dont know about the quality of the transfer...and for the charging there is a charger in the glove
With the popularity of smartphones and bluetooth a2dp, I'm looking into a wireless solution.
Has anyone looked into getting a bluetooth 3.5mm receiver to hook up to the auxiliary?
See below:
It goes for about $20 on eBay. No wires, and you can hide the receiver in your glove. Only bad thing is that you have to charge it every so often or hard wire power to it.
Has anyone looked into getting a bluetooth 3.5mm receiver to hook up to the auxiliary?
See below:
It goes for about $20 on eBay. No wires, and you can hide the receiver in your glove. Only bad thing is that you have to charge it every so often or hard wire power to it.
Thread Starter
Senior Member
Joined: Oct 2009
Posts: 291
Likes: 0
From: MD
'09 C350
Thread Starter
Senior Member
Joined: Oct 2009
Posts: 291
Likes: 0
From: MD
'09 C350
nice man, i'm just curious where it might be, i try to look for it.. no luck on my part, can u take a pic and show us? 
sorry to bring back an old thread..but I just ran an aux cable all the way through and had the cable go through the glove box in the middle..that way there is never any cables exposed and it looks like its from the dealer...there is a hole if you remove the thin carpet thats on the bottom of the glove box, I didnt have to take out the air vents, center console, or anything
Newbie
Joined: Sep 2011
Posts: 13
Likes: 2
2015 C300 4MATIC
I have the blackberry Bluetooth adapter wired in the glove box (used 3M double sided tape and hid it under the self). There appears to be a newer version than what I have (in the link below - it was around $20 when i picked it up), but i'm sure most of them work the same. I recommend against the battery powered ones since there is power in the glove box and you don't have to deal with charging it. 
MBWorld Fanatic!
Joined: Apr 2012
Posts: 1,370
Likes: 3
From: Calgary
C63 AMG
I have the blackberry Bluetooth adapter wired in the glove box (used 3M double sided tape and hid it under the self). There appears to be a newer version than what I have (in the link below - it was around $20 when i picked it up), but i'm sure most of them work the same. I recommend against the battery powered ones since there is power in the glove box and you don't have to deal with charging it.
http://www.amazon.com/BlackBerry-Rem.../dp/B00170KUM0
http://www.amazon.com/BlackBerry-Rem.../dp/B00170KUM0
Senior Member
Joined: Jun 2003
Posts: 433
Likes: 2
From: Los Angeles
2008 C300 Sport Sedan: Panarama Roof, P2, Multimedia
Couple of questions regarding the Blackberry branded bluetooth adapter. How do you have the power hooked up? Is it just connected to a car charger in the glove box? If so, does the power disconnect after you shut off the car. If not, it would suck to have bluetooth audio transmitted to the unit while you're at home with the engine off.
