firebird90

What about the Comand Unit for C-Class? I found a second hand unit from a salvage V-Class with resonable price but don't know if it possible to retrofit it.

RixC300

I went to three different dealers to upgrade from 20 to comand and got the same answer (can't be done) they told me the car is wired from the factory and cannot be revised. The Woodlands, Greenway and Sugarland dealers.

cyberorth

What do you mean by coding?

vic viper

You need to add the new SA code to the systems that need it, like head unit and intrument cluster in this case.

Zand3rs

Dont take no for an answer i guess!

firebird90

http://mbclubtr.com/nasil-yapilir/27...-retrofit.html

Here is another one. I think its the same guy which is also in the video. And another one from Taiwan which the guys went too far with many upgrades.

http://wasai117.pixnet.net/blog/post...88%92%E9%81%A9

After watching these, I start to think about getting MB Star C4 diagnostic unit to start to learn it by myself.

RixC300

I seen this video and told them about it. They said they wouldn't do it. I had an comand system located on eBay but without confirmation it could be done, I let the idea slip away. In a couple of years I'll be ready to ditch this one. lots of lessons learn with my first MB.

cin..

Could you write what in case my car has SA code 523?
I have to buy a new unit?

mclaine

I've MB C-Class (W205) registered 11/2014 with the options:
522 AUDIO 20 RADIO NAVIGATION CAPABLE NTG5
270 GPS ANTENNA

BUT NOT with:
355 PREINSTALLATION FOR NAVIGATION RETROFITTING
357 SD CARD NAVIGATION

So I do not need to install GPS antenna. Just the SD card slot and 12 V feed cable?
Questions:
- What are the part numbers required (presumably a2058204800 is coming with GPS antenna and I would not need it)?
- Any advice on installation (photos / videos) as the instructions vic viper gave are including gps -antenna?
- Is the 12 V feed cable for the GPS antenna as the SD card slot is just data transfer?

The SD card I've thought to order from satnavstore.com.

Also does anyone know what extra does it require to have also Apple Car Play or is it even possible as the existing system is NTG5..

Thank you and appreciated!

benzdude

Buy a phone dash mount and use Google Maps. MB navigation is frustrating.

mclaine

Might be an easy option but still wanting to get the nav main unit and to dashboard

Robert.

Hi, where do I have to plug the 12 V additional cable into the A pillar? in the fuse box?

mclaine

Yes indeed in fuse box in A-pillar on passenger side. Very difficult to explain in details so best would be to get this information from dealer but I'll try as I made some notes when doing this:
- Remove black multiple fuse holder
- Remove blue 6-pin connector from fuse holder (marked MF2)
- Put 12V wire in contact cavity 5 of blue 6-pin connector.
- Install blue connector back to fuse holder etc. reverse to removal
- The other end of supply voltage goes naturally to SD card reader. Route wire carefully under the passenger side ventilation duct etc. Use tape and felt tape to secure it and avoid damage due possible sharp edges
- On the SD card side:
- Remove black 8-pin connector housing from blue supporting body.
--Install contact spring of 12 V wire in contact cavity 5 of black 8 pin connector housing and install into blue supporting body. This should be now ready to be plugged to SD card reader.


Note. Remember to disconnect ground line of battery..

mclaine

I made some notes during installation so below in brief (best would be to get some instructions from dealer). Remember to disconnect ground line from the battery.
- Fuse box is located in A-pillar bottom part on passenger side. To access this remove the plastic part
- Remove black multiple fuse holder from fuse box
- Remove blue 6-pin connector from above mentioned fuse holder (marked MF2 if I recall correctly)
- Install contact spring of 12V wire (this is wire harness you should buy) in contact cavity 5 of blue 6-pin connector
- Install blue connector back to black multiple fuse holder and install them back to the A-pillar. Do this carefully in order to make sure that all fuses are sitting correctly in their places
- Route the 12V wire in passenger footwell ( I removed the plastic duct for better routing) to SD -card reader in center console
- Remove black 8 pin connector housing from blue supporting body
- Install contact spring of 12V wire in contact cavity 5 of black 8 pin connector housing
- Install black 8-pin connector into blue supporting body

SD card should be powered when you put the ground cable back to the battery.

Robert.

ok thanks worked 👍🏻

ScottC43

Would this work for a newer 2020 model with SD Card Reader/Audio 20 Nav Capable Radio/GPS ANTENNA but NO Option 355
or is there another wiring option that would make this work. I really appreciate any assistance.

ScottC43

Would this work for a newer 2020 C model with SD Card Reader/Audio 20 Nav Capable Radio/GPS ANTENNA but NO Option 355
or is there another wiring option that would make this work. I really appreciate any assistance.

SpecialCar

I’ve the same identical situation, is there any answer?
How is it coded?
Please help

ScottC43

If you do not have code 355 installed at the factory you will not have navigation capability.
No way possible to make that happen.

SpecialCar

😞
Thanks for reply!
But I have:
522 AUDIO 20 RADIO NAVIGATION CAPABLE NTG5
270 GPS ANTENNA

why then is the GPS antenna installed and “radio navigation” written?

Support Carplay / AndroidAuto?
VERY VERY THANKS

rightrudder

Yes, I'm finding the COMAND system a little clunky overall, and difficult to initially program with things like radio presets, etc. YouTube videos are my friends here!

So easy to say, "Hey Siri, navigate to xxxxxx..."