i currently own a 2009 C350 and only have the OEM 5" in-dash display without NAV.

my question is, is it possible to upgrade to the OEM 7" Navigation System Display (part no. A 204 820 46 97 9F 45) as long as i also upgrade the head unit below to the matching OEM Navigation CD Radio Head Unit Changer HDD?

what other parts might i need to make sure i don't lose any of my original functions (i.e. steering wheel controls, center console scroll wheel, etc.)

 

Nice thread, I have got the same problem.

 

here's a thread from the other forum on the retrofit

http://www.benzworld.org/forums/audi...4-c-class.html

 

You do know that the 7" display isn't touchscreen either, right?

 

You just buy this, take the old one out plug the new one in, then have the dealer to program the car Navi = Present. It is NOT touch screen tho.

http://www.ebay.com/itm/Mercedes-C-class-W204-Comand-NTG-4-sat-nav-HDD-navigation-system-/271217694129?pt=UK_In_Car_Technology&hash=item3f25d595b1

 

yes i am aware, not a deal breaker for me

 

that thread got all too confusing for me. does it make a difference that i'm in the states and the parts i'm trying to upgrade with are made for the US and not Europe?

 

i recently just upgraded my 2011 c300 with the 7" screen, what snowmuch said is completely wrong in regards to what needs to be purchased. here are the list of parts that is required to do the retrofit

204 870 28 51 SWITCH
FOR CONTROL DISPLAY
001
A 204 830 41 54 9116 AIR NOZZLE
CENTRAL
001
A 022 545 74 26
CLUTCH
ANTENNA CABLE
2-PIN
001
A 211 820 00 88 EL. CABLE
ANTENNA CABLE ADAPTER
001

A 204 540 97 06 WIRING HARNESS 001
A 204 440 95 32 ELECTRICAL WIRING HARNESS
OPERATING UNIT TO CENTRAL DISPLAY
001
A 211 984 04 29. X2
BOLT
MOUNTING OF AIR INTAKE
M5X16
001
A 204 832 12 45 AIR DUCT
AT CONSOLE LEFT
001
A 204 832 05 45 AIR DUCT
UNDER CONTROL UNIT
001
A 204 832 10 45 AIR DUCT
AIR INTAKE,BOTTOM
001

A 204 832 06 45 Air duct

A 204 906 01 15 FAN 001

A 001 820 76 75 ANTENNAGPS

A 204 820 46 97 9F45 MONITOR 001
A 204 900 96 06 CONTROL UNIT 001

then perform the following in order

http://ww2.justanswer.com/uploads/CH...ess_comand.pdf

http://ww2.justanswer.com/uploads/CH...for_comand.pdf

http://ww2.justanswer.com/uploads/CH...ion_system.pdf

 

after the above, you'll also need to take car to dealer or anyone with a star diagnostic tool or even aftermarket tools that can program the needed scn coding and update datacard on vehicle. optional to update firmware on your control unit to the newest verson then update map verson as well.

 

oh and after install that comand, u'll also gain voice controls for your navi

 

uh? That's what I did and everything works fine.

 

without the new harness to the front SAM, your screen would not even power up. not to mention then center air vents are missing the 2 buttons for the screen closure and tilting functions unless your car originally came with the comand pre-wired, which i highly doubt.

 

please dont listen to this uneducated person....i did this mod years ago, and the dealer does not need to program anything....its plug n play after redirecting some of the wiring....

 

thats what im saying, its funny when people act like they know what they are talking bout...

 

Source: https://mbworld.org/forums/c-class-w...m-writeup.html

Oh I love the irony. I have to prove you wrong not once, but many times from other threads. But then again you're the same pathetic idiot who said MB looks like a 4x4

 

catching feeling over there huh???

 

It all depends on your cars as well as the HU current setup, ie. if MOST is activated in any side problems can occur, it may also work from the getgo but thats not the case for everyone.
In any case I feel that I would want my car correctly programmed and coded to eliminate future problems and make any kind of diagnosis troubleshooting easier.

 

can you post a link??? i would love to see what "problems" have occured.....thanks in advance

 

Most common is that HU is shutting down, often in combination with opening or closing front doors.

 

do you have a link???

 

Very accurate picture of yourself.

 

A link to what?, why is this so important for you?

 

Ignore that fool, he just can't stand the fact that you proved him wrong

 

I was looking into to this when I first purchased my 2011 c300, I was referred by MB dealership to an authorized shop that deals with MB and they quoted 3000$ for the unit and 2500$ for installation mainly due to some sort of computer upgrade? Sounds like too much trouble for that beauty of a screen. Next time just going to get the Premium sound package

 

your guys are charging you too much, its really not that costly, i got my whole unit done for a lil over 1500. just go on car-parts.com and find a used unit and display. as for installation, take it to any body shop to install then finally, take it to that "authorized" shop to have them program it.

for the installation, follow my instructions in the comments above