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2015 S550 Issues

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Old May 23, 2023 | 09:41 PM
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09 S63
2015 S550 Issues

Hello all! I bought a 2015 S550 4Matic today. Seller advertised car as nothing wrong so either he lied or I can't figure this out...

Issue #1 I connected my phone to the car but it won't connect for Bluetooth Audio, only calls.

Issue #2 Navigation says ACTIVATING Please Wait

Issue #3 Command/Radio buttons seem to be sticky and I can't get the MEDIA to display the source every time and when I do find a source I can't click/confirm it.

What am I doing wrong? I've already reset it via the eject cd button

Please help
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Old May 23, 2023 | 11:09 PM
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On item one- you have to select audio to allow it to work, it is a separate item to check off. I don't remember exactly how to do it so someone else might have to chime in.

The buttons- if you are talking about the ones on the console- most certainly they had coffee or soda spilled on them at some point.
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Old May 23, 2023 | 11:34 PM
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Originally Posted by emilner
On item one- you have to select audio to allow it to work, it is a separate item to check off. I don't remember exactly how to do it so someone else might have to chime in.

The buttons- if you are talking about the ones on the console- most certainly they had coffee or soda spilled on them at some point.
On my Android phone I select audio for the Bluetooth and it de selects it by itself, don't know why
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Old May 23, 2023 | 11:43 PM
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Originally Posted by Denis_E55
On my Android phone I select audio for the Bluetooth and it de selects it by itself, don't know why
You select it from the car. If memory serves- when you are in the phone menu go into manage phones or something like that and select your phone and check the audio icon. Then when you want to listen to BT audio hit Media and it should load the bluetooth audio (I use an iPhone but it should be the same).
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Old May 23, 2023 | 11:57 PM
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Originally Posted by emilner
You select it from the car. If memory serves- when you are in the phone menu go into manage phones or something like that and select your phone and check the audio icon. Then when you want to listen to BT audio hit Media and it should load the bluetooth audio (I use an iPhone but it should be the same).
I connected to BT again and both calls and audio are selected but still won't play when I go under media. I also can't hear anything when making calls... Could my COMAND unit be bad?
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Old May 24, 2023 | 12:01 AM
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Originally Posted by Denis_E55
I connected to BT again and both calls and audio are selected but still won't play when I go under media. I also can't hear anything when making calls... Could my COMAND unit be bad?
Sorry- I have no idea.
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Old May 24, 2023 | 09:24 AM
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Try pairing an iphone or another phone to see if you are having the same issue. I've had one of my iphones be a little glitchy from time to time, after I upgraded it wasn't a problem.

Navi, no idea, could be a number of issues. Would probably need to get it scanned to pin down the exact problem.

For the sticky buttons, tape the top of the buttons with painters tape, spray a little bit of CRC QD Electronic Cleaner under the buttons and give it a few min to dry out.
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Old May 24, 2023 | 10:01 AM
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Originally Posted by vincheung
Try pairing an iphone or another phone to see if you are having the same issue. I've had one of my iphones be a little glitchy from time to time, after I upgraded it wasn't a problem.

Navi, no idea, could be a number of issues. Would probably need to get it scanned to pin down the exact problem.

For the sticky buttons, tape the top of the buttons with painters tape, spray a little bit of CRC QD Electronic Cleaner under the buttons and give it a few min to dry out.
Cleaned it with CRC hopefully it helps. The vehicle was a theft recovery car and seller isn't being honest but I found the bottom picture online, what all goes thru the CD Changer & NAVI SD Card hard drive looking thing? Wonder if they replaced it with a bad one or something?


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Old May 24, 2023 | 11:18 AM
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If it was a theft recovery, they probably disconnected or pulled some fuses and relays related to the GPS/NAV. Im guessing they also disconnected some relays/fuses related to command also. See the below link and check on any of the fuses/relays.

https://fuse-box.info/mercedes-benz/...-and-relay/amp

it’s possible they yanked out a number of fuses, take a peek at the above link. It details location and the function of each fuse. If you find one missing or damaged there are prob a few more.
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Old May 25, 2023 | 10:51 PM
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Originally Posted by emilner
On item one- you have to select audio to allow it to work, it is a separate item to check off. I don't remember exactly how to do it so someone else might have to chime in.

The buttons- if you are talking about the ones on the console- most certainly they had coffee or soda spilled on them at some point.
Had the same issue when I purchased my 15. I carefully steam cleaned and lightly brushed, and instantly brown crud came out. Like new now.
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Old May 27, 2023 | 12:29 PM
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I guess it would help if I had a hard drive! I sourced one that is supposed to be plug and play and will get 2022 MAPS. I'll follow up once I get the hard drive installed.

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Old May 28, 2023 | 04:18 AM
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OP I find using navigation via IPhone to be better then the system in the car. It gives turn by turn instructions.
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Old May 28, 2023 | 08:18 AM
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Originally Posted by JohnLane
OP I find using navigation via IPhone to be better then the system in the car. It gives turn by turn instructions.
I agree but I would like to have working BT, CD & USB so would like to get the COMAND System 100%
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