Bluetooth connection
Good morning everyone.
I have a small issue here. My Mercedes comes equipped with Bluetooth connection and I already have a phone installed, you put a sim card and you're good to talk on it. I wonder what the Bluetooth is supposed to do? I have connected my mobile phone via Bluetooth, it's showing as connected on the display but nothing happens. To my frustration, the car doesn't have the multimedia plug, you know, the one similar to MMI from Audi, or iPod connector, it has only a CD changer and 3.5mm audio jack aux.
So, my question is, what the Bluetooth connection is supposed to do because I couldn't figure out how to make use of it? Any help is very much appreciated!




I installed OEM Bluetooth into my 2006 CLK350. The systems of that era required a Bluetooth "puck" to be installed in the console, which looked like the photos below. Earlier, pre-Bluetooth Benzes I've owned had handsfree capability but required the use of a proprietary Mercedes-branded Motorola phone like the StarTac, Timeport and V60. Yours looks more like the even older versions of the console mounted phones with the classic "curly cord".
When I had the mobile phone connected via Bluetooth, on the comand display it shows as connected, but not on the phone. I got a call on my mobile phone while the radio was on, but no sign on the comand. My mobile phone was the only one ringing. I have tried to remove the phone completely from the arm rest but I couldn't figure out how to do it, but I'll do that later if there's any reason. Below are 2 photos showing the connectors. Starting from that, what can be upgraded? I haven't seen any kits with this kind of plugs to be available.
I installed OEM Bluetooth into my 2006 CLK350. The systems of that era required a Bluetooth "puck" to be installed in the console, which looked like the photos below. Earlier, pre-Bluetooth Benzes I've owned had handsfree capability but required the use of a proprietary Mercedes-branded Motorola phone like the StarTac, Timeport and V60. Yours looks more like the even older versions of the console mounted phones with the classic "curly cord".




@Tsumi, you have a 2006 R-Class as well, do you have Bluetooth?? I searched an owner's manual online and the word "Bluetooth" doesn't appear to be in it:
https://www.manualowl.com/am/Mercede.../Download/1414
I confess I know nothing about the R-Class; I've just started to look into it as a possible alternative to an ML-Class, as supplies are low and prices high.
Last edited by eddieo45; Jun 7, 2022 at 08:38 AM.
@Tsumi, you have a 2006 R-Class as well, do you have Bluetooth?? I searched an owner's manual online and the word "Bluetooth" doesn't appear to be in it:
https://www.manualowl.com/am/Mercede.../Download/1414
I confess I know nothing about the R-Class; I've just started to look into it as a possible alternative to an ML-Class, as supplies are low and prices high.
ML, GL, and R class are pretty much electrically identical. Parts that are different are different due to different physical shapes and/or buttons.
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Last edited by eddieo45; Jun 9, 2022 at 07:41 AM.
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Still pairing while on the radio it shows Connected
Connected... apparently
PIN request on the phone
PIN request here
Select the device
SERV/Bluetooth
https://youtu.be/5fpKkycz0Uw
Yes, my name is Emanuel(my phone is a bit funny sometimes, it switches characters when I type fast, it happens often and I have no idea why). Well, the phone seems to be there and it looks OEM. I have tried a SIM card (old style) and it works fine, but it is inconvenient for the driver and doesn't look good for road cameras of cops cars passing nearby. The mobile phone is connected to the car following the classic sequence. Radio's SERV menu/Bluetooth/search for devices, once my mobile phone is listed, I press OK, on the phone a PIN code is required, type 1234 on the phone then on the radio the same pin is required, 1234 again, then it shows Connected, as in the picture. Now I am asking: is there another way to do it? I'm completely confused, I am not a newbie in this field(Google assistant supported speakers configured in my entire home, Philips Hue lighting set up and working all over the house, smart home appliances connected, home automation, custom NFC devices and the list is endless).
Regarding the Bluetooth connection on my car, I found only one way to do it, described above.
@Tsumi, you have a 2006 R-Class as well, do you have Bluetooth?? I searched an owner's manual online and the word "Bluetooth" doesn't appear to be in it:
https://www.manualowl.com/am/Mercede.../Download/1414
I confess I know nothing about the R-Class; I've just started to look into it as a possible alternative to an ML-Class, as supplies are low and prices high.








Forgive my SIM card ignorance; back in the 20th Century when I had to have a grasp of cellular phone technology Verizon and it's predecessors didn't use them, and now that they do, I handle real estate in the industry and don't need to really know the technology.
The SIM card turns the phone into your phone, right? I mean, you insert your SIM card into that hardwired phone and it becomes the phone number, data plan, etc. associated with your wireless account, right? If that's the case, why not skip Bluetooth and see if you can receive a call in the car by pressing the "answer call" button on the steering wheel without picking up the handset....?
Last edited by eddieo45; Jun 14, 2022 at 09:13 AM.
Regarding the sound quality, what are the gains and losses? I have done some reseaches and the steering wheel controls are still working with the adaptor included. Can you adjust the time from the android unit as you did with the OEM unit? On my unit, I have an option to use the rear DVD player as a sound source for the entire audio system, so the movie played on the head rests can be heard in the car, not only on the headphones connected to the head rest monitors.
There are auxiliary inputs that you can use for input from the rear DVD.
No, I don't think you can adjust the gauge cluster clock from the android head unit. I used Xentry to disable navigation on the gauge cluster so I can adjust the clock directly from the gauge cluster menus.
I actually think you may be TOO savvy! You've got to get your head back to 2006 (or maybe 2004, since MB has never been on the cutting edge of technology. Why is the PIN 1234? When my older MBs required a PIN it was always 62872 (that's MBUSA on a phone's keypad). Maybe try that?



