OEM Navigation Retrofit w/ pics




These steps are intended for a 2005 MY W211 sedan which has a full screen COMAND head unit. This particular model has everything pre-wired, so the install would consist of installing a DVD processor in the trunk for plug and play operation. No cutting or splicing of wires needed. The most difficult part is probably removing and re-installing the trunk panel. So if you can do that, this is an extremely easy retrofit.
I ordered the complete kit from mbdoctor.com and received everything within a week as promised (I am on the west coast). Sammy was excellent to deal with. He called me after the order was placed to confirm the spec of my car so correct parts are ordered. Subsequent call were answered promptly, and he patiently answered all my questions. He even included a detailed instruction to make the installation a breeze. Kudos to Sammy, I would definitely do business with him again in the future.
This is what the install kit consists of:
1 Base bracket A211 545 54 40
1 Processor bracket A211 545 63 40
1 Navigation processor A220 820 60 85
1 MOST fiber adaptor A211 540 68 33
1 GPS antenna splitter A210 820 24 89
1 Screw N 910 105 006 023
1 Nut N 910 112 006 003
1 Left rear trunk panel A 211 690 01 53 9C53
note: truck panel comes in different variations, you will need to specify the following when ordering:
1. If the car has fold down seat
2. If there is a cigarette lighter power outlet in the trunk
3. Color of the trunk interior (black or gray)
Sorry about this stupid question but I have a Audio 50 and I bought an APS 50 and I don't know how to remove the central unit (HU) so that I install the new command. I don't see any screw locations anywhere. Thanks a lot for your help

Several posts explain how to remove the HU, search here or Audio & Telematics (you would have to start from the gear shift lever panel, ashtray, CD-changer and then open the bolts from the bottom of the HU).
The Best of Mercedes & AMG

6-7-82-3111 Splitter ($52.00) - $41.60
211-545-79-40 Bracket ($49.50) - $39.60
211-545-63-40 Supporting Holder ($29.50) - $23.60
211-690-21-25-8J40 Panelling (Stone colour) ($214.00) - $171.20
Shipping/handling = $7.50
The price of doing business with MB Dealers!!
http://cgi.ebay.com/GPS-ANTENNA-FAKR...em220261871330
Thank you for the excellent post. I wonder if anybody have done the same since this thread? My car also is also 2005 E320 but it was put in serviced August 11, 2004. Any follow-up success story would be appreciated.
My car is a Uk 2004 E320 cdi with:
Aps50 navigation
harman Kardon audio
I want to upgrade from APS50 to COMAND
Ive installed the new head unit, piece of cake.
Ive got the boot liner off, and have 2 issues:
1: no power plug present, would this be just power or speed signals too?
2: The gps lead is too short, is there a part number for an extention, only needs to be 6-12 inches.
Last edited by aka$h; Oct 22, 2008 at 01:25 PM.



My car is a Uk 2004 E320 cdi with:
Aps50 navigation
harman Kardon audio
Ive installed the head unit, piece of cake.
Ive got the boot liner off, and have 2 issues:
1: no power plug present, would this be just power or speed signals too?
2: The gps lead is too short, is there a part number for an extention, only needs to be 6-12 inches.
Are you upgrading to APS50, or to COMAND? Not clear from your post...
If you are upgrading to APS50, the GPS antenna should be installed behind your instrument cluster, not in the boot.
I did find the part number for the nav drive power cable, this also includes a 10inch extention for the gps wire, part number:
A2115409109
One thing in still uncertain of is the wires that are on the power block for the nav unit. There are 3 wires, 2 go into the rear SAM, one is a pink wire which came with the above harness but is over a metre long and is not connected at present. I assume its a speed signal?
Any one know where it goes?

I did find the part number for the nav drive power cable, this also includes a 10inch extention for the gps wire, part number:
A2115409109
One thing in still uncertain of is the wires that are on the power block for the nav unit. There are 3 wires, 2 go into the rear SAM, one is a pink wire which came with the above harness but is over a metre long and is not connected at present. I assume its a speed signal?
Any one know where it goes?

What do SAM, MOST, AGW, etc..., stand for???

And also, could anyone give me a hint where the GPS antenna for a 2008 ML350 would be located? It does not have the hunch/hump on top of the roof, where I expect to find things like this.

Thanks in advance!
MOST = Media Oriented System Transport (fiber optic shared communication)
AGW = Audio Gateway (amplifier)
GPS antenna, see #10 in diagram.
I have a 03 e320 I tried to install it. I had the CD with casset. after replacing it with comand and nav drive and hooking all the fiber optic wires. my screen did not come on and on my dash it showed (----), Did you have this problem?
If you did how did you overcome this issue?
Thanks in advance
WHERE IS THE MOST WIRE THAT IS CONNECTED TO THE AGW?
Where is it connected to exactly.
If anyone has a picture of this connection in the trunk, that will make my life so much easier.
Please let me know, besides this, i have figured out everything.
Thanks in advance.



