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

W221 Command problems - HELP!!!

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Old 04-14-2014, 12:25 PM
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2007 S350
Unhappy W221 Command problems - HELP!!!

Hello all,
My command recently went dead (no Nav, FM/AM, CD/DVD, blank screen) and the rear AC controls also dead alongside some of the buttons around the joystick (only the rear sunshade and hazzard light buttons works here). The front AC controls are working ok.

I checked the car in at mercedes service centre here in Abu Dhabi, and after 7 days they conclude that there is a faulty panel burnt in the command unit which is preventing power supply to the whole unit. They also claim this should not affect the rear AC or some of the dead buttons around the joystick (namely: transmission (M-S-C) button and the rear-seat headrest button). I have a feeling that whole thing is all connected, they all malfunctioned the same time. The Mercedes guys are suggesting I get a new command unit for about $12k.

Anyone had a similar problem before? what would you advice? I see some command units on ebay for $1k-$3k range with no warranties - are these viable options? Is there a reliable repair service for this sort of thing? please help, driving my s-class without any audio is unbearable!
Old 04-14-2014, 04:55 PM
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Originally Posted by Osemann
Hello all,
My command recently went dead (no Nav, FM/AM, CD/DVD, blank screen) and the rear AC controls also dead alongside some of the buttons around the joystick (only the rear sunshade and hazzard light buttons works here). The front AC controls are working ok.

I checked the car in at mercedes service centre here in Abu Dhabi, and after 7 days they conclude that there is a faulty panel burnt in the command unit which is preventing power supply to the whole unit. They also claim this should not affect the rear AC or some of the dead buttons around the joystick (namely: transmission (M-S-C) button and the rear-seat headrest button). I have a feeling that whole thing is all connected, they all malfunctioned the same time. The Mercedes guys are suggesting I get a new command unit for about $12k.

Anyone had a similar problem before? what would you advice? I see some command units on ebay for $1k-$3k range with no warranties - are these viable options? Is there a reliable repair service for this sort of thing? please help, driving my s-class without any audio is unbearable!
Mercedes (at least here in the US) sells its own warrantied refurbished parts, including COMAND units. They show a refurb price of $1400. Not sure if they're available where you are but worth a look:

https://www.mbusa.com/mercedes/servi...ufacturedparts
Old 04-17-2014, 08:16 AM
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This problem is consistent with low battery voltage from the vehicle. The COMAND has shut down to protect itself.Through the car CANBUS it also affects the buttons around the aduio controller. Check both batteries in the car before you buy anything.

Last edited by gapcobenz; 04-17-2014 at 08:18 AM. Reason: Added more information
Old 04-22-2014, 11:39 PM
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where is the second battery located on the s550
Old 04-23-2014, 06:52 AM
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Renzo what country do you live in?
Old 04-26-2014, 11:27 AM
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Originally Posted by gapcobenz
Renzo what country do you live in?
Im in the usa chicago il.
Old 04-26-2014, 12:26 PM
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Renzo, call Eddie @ Beckerautosound,Saddle Brook, NJ. they are the Comand specialists in the USA. The second battery is in the car boot (sorry) the trunk,it's located behind the rear seat back rest hidden away. You'll have to remove a moulded carpet to reveal the battery.There are also many control boxes for the car there as well so pay attention when you work there!
Old 12-12-2019, 08:04 PM
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Originally Posted by Osemann
Hello all,
My command recently went dead (no Nav, FM/AM, CD/DVD, blank screen) and the rear AC controls also dead alongside some of the buttons around the joystick (only the rear sunshade and hazzard light buttons works here). The front AC controls are working ok.

I checked the car in at mercedes service centre here in Abu Dhabi, and after 7 days they conclude that there is a faulty panel burnt in the command unit which is preventing power supply to the whole unit. They also claim this should not affect the rear AC or some of the dead buttons around the joystick (namely: transmission (M-S-C) button and the rear-seat headrest button). I have a feeling that whole thing is all connected, they all malfunctioned the same time. The Mercedes guys are suggesting I get a new command unit for about $12k.

Anyone had a similar problem before? what would you advice? I see some command units on ebay for $1k-$3k range with no warranties - are these viable options? Is there a reliable repair service for this sort of thing? please help, driving my s-class without any audio is unbearable!
Did you ever resolved ur issue?
Old 12-12-2019, 08:06 PM
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I have the same issue but I already bought a new battery but the screen still blank and wont turn on, center console controls m-s-c are not working either. Need Help?
Old 12-29-2019, 07:30 AM
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Originally Posted by Aces1913
I have the same issue but I already bought a new battery but the screen still blank and wont turn on, center console controls m-s-c are not working either. Need Help?
Hello, did you fix the problem? I can help I work on Mercedes units, what exactly is the issue?
Old 01-11-2020, 05:18 AM
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Command Unit will not power up

Originally Posted by alexander nunez
Hello, did you fix the problem? I can help I work on Mercedes units, what exactly is the issue?
can you assist me with my Command Unit. It will not power up
Old 01-11-2020, 05:35 AM
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Originally Posted by Kevin Bens
can you assist me with my Command Unit. It will not power up
What year and model is?
No sound or display is black?
Old 01-11-2020, 05:37 AM
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Originally Posted by Kevin Bens
can you assist me with my Command Unit. It will not power up
You can text me at 3159294995.
Old 04-16-2020, 04:18 PM
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Hi Oseman, I'm having the same problem with my 2012 s550. how did you fix yours. thank you
Old 04-16-2020, 04:20 PM
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Hi, im having to same problem with my 2012 s550..How did you fix yours. thank you
Old 04-16-2020, 08:00 PM
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Originally Posted by alexander nunez
You can text me at 3159294995 or .
3159674352
Old 04-18-2020, 01:28 AM
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Help please

Does anyone know code so I can turn on Bluetooth streaming- for music from phone / my phone call Bluetooth works but I’d love to stream .

regards
noodles51
Old 04-18-2020, 01:56 AM
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Originally Posted by Noodles51
Does anyone know code so I can turn on Bluetooth streaming- for music from phone / my phone call Bluetooth works but I’d love to stream .

regards
noodles51
What year and model is yours?

Regards.
Old 04-18-2020, 03:24 AM
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Originally Posted by alexander nunez
What year and model is yours?

Regards.
2012 s 350
Old 04-18-2020, 03:26 AM
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Mercedes s350 2012
S class 350

W221 s350 2012 jap import to New Zealand
Old 04-18-2020, 03:32 AM
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Originally Posted by Noodles51
W221 s350 2012 jap import to New Zealand
Sorry but there's no code to stream music for that model.
this can do the job.
https://www.ebay.com/itm/2007-2009-S...-/252362623871
Old 04-18-2020, 03:44 AM
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Hi thanks for link - I was told if I knew engineering code to get into background stuff to see if I can turn on or off / is this not correct
Old 04-18-2020, 04:11 AM
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Originally Posted by Noodles51
W221 s350 2012 jap import to New Zealand
Originally Posted by Noodles51
Hi thanks for link - I was told if I knew engineering code to get into background stuff to see if I can turn on or off / is this not correct
Well in all the years I have being working with this units I have never seeing that and I can go to the engineering mode. But who know.
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Old 04-18-2020, 04:27 AM
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Are you able to tell me engineering mode so I can go for a look

cheers
Old 04-18-2020, 04:33 AM
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Originally Posted by Noodles51
Are you able to tell me engineering mode so I can go for a look

cheers
What's your email? I'll email you tomorrow is 4:30 am in here. Lol.


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