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Comand Headunit Replacement

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Old 08-18-2022, 06:42 PM
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2015 C300
Comand Headunit Replacement

My screen suddenly went off and never came back to me. Try to tear it down the centre console and check all the connections. No luck. I am thinking to bug a exactly same unit from eBay, will it plug and play? Thanks
Old 08-18-2022, 08:02 PM
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Originally Posted by Jim Hopper
My screen suddenly went off and never came back to me. Try to tear it down the centre console and check all the connections. No luck. I am thinking to bug a exactly same unit from eBay, will it plug and play? Thanks
No, you need to code it in with an anti theft code.
Old 08-18-2022, 08:06 PM
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Originally Posted by PaulR7
No, you need to code it in with an anti theft code.
how about I purchase the part and ask dealership to code? Is it possible?
Old 08-18-2022, 08:07 PM
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Originally Posted by Jim Hopper
how about I purchase the part and ask dealership to code? Is it possible?
Yes, do ask them first what sort of info they'll need from you and maybe the seller of the unit.
Old 08-18-2022, 09:24 PM
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Originally Posted by PaulR7
Yes, do ask them first what sort of info they'll need from you and maybe the seller of the unit.
Thanks again. My car I have all documents for sure. For seller, well it's from eBay..
Old 08-19-2022, 09:15 AM
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This is a common problem. In another thread it would seem that removing the Satellite radio fixed the problem. Some others have had it flashed by MB while others have had to have the command replaced by MB.

One thing is that it's normal for most including myself. Seem to boot right up when it does happen by going in reverse. I have all the updates and it still happens and I just learned to live with it but hopefully it does not just die.

One thing that helps sometimes it reset the full car which is by press turning the car off, leave the drive door open, remove the keys and make sure that they 10 meters away. Then come back and press the brakes for 2 minutes, then after that, disconnect the battery and leave it disconnected for 30 minutes.

After all this, reconnect the battery, get the keys and start that car but don't drive it for 2 minutes. After that, everything should work but you will need a week of driving to get the transmission back on track.
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Old 09-23-2022, 06:25 AM
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Screen hell

Originally Posted by PaulR7
No, you need to code it in with an anti theft code.
it happens to my car as well. I just turned the car on and held the CD eject button until the screen came back on.
Old 09-23-2022, 05:55 PM
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I replaced this ugly tiny screen with a 10.25" multimedia screen
Old 09-24-2022, 06:13 AM
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What kind?

What options does it give your car? Is it a fix for the 3g shutdown?
Old 09-24-2022, 07:14 AM
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Originally Posted by Jim Hopper
how about I purchase the part and ask dealership to code? Is it possible?
I have them
Old 09-24-2022, 11:01 AM
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Originally Posted by MyMaticC300
What options does it give your car? Is it a fix for the 3g shutdown?
It play videos while in motion. It shows rpm and speed gauges on the full screen as an option. I am not sure about this 3g issue. I had no issues with it.

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