GL Class (X166) 2013-2015 after facelift became GLS (X166)

COMMAND Head Unit Replacement Options

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Old Aug 12, 2025 | 07:23 PM
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COMMAND Head Unit Replacement Options

The command unit went out on my 2015 GL550. My part number is A 166 900 52 15. I can't for the life of me find a match on ebay. what are my options for repair/replacement? At this point I don't mind considering after market, just don't know what to do.
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Old Aug 14, 2025 | 09:45 AM
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2014 GL350
Originally Posted by frogger42
The command unit went out on my 2015 GL550. My part number is A 166 900 52 15. I can't for the life of me find a match on ebay. what are my options for repair/replacement? At this point I don't mind considering after market, just don't know what to do.
FWIW, if you go with a replacement (or used) OEM Comand unit, the vehicle will require programming for its anti-theft protections.

Surfing the internet, I have come across full Comand replacements from China (example, so they are out there) but I have no idea how well they work. Just looking at the specs, one would want to make sure to order one with the optional fiber optic connections.


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Old Nov 21, 2025 | 02:27 PM
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C350-2013, GL350 BlueTec-2015, GLK 350 -2015
Great Option

https://roadtop.com/

Select_> Touchscreen and pick your model

Have installed on GL and GLK

Running smoothly now for 2 weeks.
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Old Nov 21, 2025 | 06:47 PM
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2014 GL350
Originally Posted by Benzenator
https://roadtop.com/

Select_> Touchscreen and pick your model

Have installed on GL and GLK

Running smoothly now for 2 weeks.
This unit would be an upgrade that still requires a working Comand unit, no?
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Old Nov 24, 2025 | 03:41 PM
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C350-2013, GL350 BlueTec-2015, GLK 350 -2015
Valid point. Yes, this is for screen replacement only.

Check with a junkyard they can sell you one out of a wrecked vehicle.

Not sure if you will need a reflash due to VIN. So that's something you need to figure out.
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Old Nov 25, 2025 | 01:30 AM
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Just went throug this myself... and yes a used one will need to be coded at the dealer, for which you will need the VIN of the car it came from.

Total cost would be approximately $1,300: Around $300 for the used heat unit, and I was quoted $1k for the coding and installation...

But instead, I found a place here in South Florida that repairs your unit for $880 with a 6 month warranty...one day turnaround.

I just picked mine up today, and it works perfectly...he had a stack of them in his shop and said its a very common failure.
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Old Nov 25, 2025 | 09:58 AM
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C350-2013, GL350 BlueTec-2015, GLK 350 -2015
Name?

Originally Posted by boosted305
Just went throug this myself... and yes a used one will need to be coded at the dealer, for which you will need the VIN of the car it came from.

Total cost would be approximately $1,300: Around $300 for the used heat unit, and I was quoted $1k for the coding and installation...

But instead, I found a place here in South Florida that repairs your unit for $880 with a 6 month warranty...one day turnaround.

I just picked mine up today, and it works perfectly...he had a stack of them in his shop and said its a very common failure.
Name of shop?
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Old Nov 26, 2025 | 02:16 AM
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broom
Originally Posted by Benzenator
Name of shop?
M&B Specialist in Pompano, FL
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