hkhan

Hi all,
I have done a facelift conversion on my 2012 e220 cabriolet however, I am really stuck on the headlights, i have taken the car to a number of electricians to try and get them powered up but they have all struggled. If anyone could please help me with this it would be greatly appreciated.

Thanks in advance

MJ50

moved to C207 forum...
Xentry might be needed for version coding...

ob2s

Tell me the part number of your old headlights and the part number of the new.

hkhan

Hi,
the new headlight part number is a207 820 09 59kz and the old one is a207 820 02 59kz.

Many thanks

ob2s

So you live in a Right Hand Drive market ?
This is the new one right ?
And this the old one ?

On the old one, was the low beam High Intensity Discharge or H7 halogen ? Also do you still have one of the old headllights ?

hkhan

Yes right hand drive, yes the first was the new part number. They were xenon headlights so I assume high intensity discharge. I don't have the old headlights unfortunately

ob2s

The new headlights are installed in the car already ?

hkhan

They are fitted but the only thing that works are the indicators

ob2s

So as you can imagine the wires in the harness don't match the headlight. Before you had a low beam/high beam combo controlled by the ballast, now you have 2 circuits, one for low and one for high. The low beam circuit wire is there but connected to the wrong prong on the headlight. There is no high beam wire in your harness, but there is a prong on the headlight for it. There probably isn't anyone (outside hella and mercedes) that knows more about these headlights than I, and that doesn't include the very expensive dual led headlight of which I know nothing. At minimum, you have to swap the wire the is fat yellow on one side and yellow black on the other currently connected to pin 6 on the headlight to pin 4. Pin 6 on your new headlight is a dummy pin. This should get your low beams working from the switch, HOWEVER, you will get a message saying the low beam is out. You have to splice an H7 resistor in there to compensate for the resistance loss of the LED. In fact you'll get all kinds of messages I imagine, depending on if you had LED daytime running lights, or side markers that aren't on the new bumper. So at a minimum just to get on the road at night, you'll need to swap the wires I mentioned above. Sorry but you stepped into a CF.

Asghar.ali262

HI Dear,
i am converting my W207 2011 to 2014 Facelift Version with Xenon lights,front Sam,Front & Rear Bumper,Side Skirts and Back Lights,

now the problem is that the headlights are not working,i have installed the new SAM but no good,
Could you guide me what should i do how can i make this work or is their anything missing,

Regards

ob2s

They are not called Xenon. 2014 is LED only, or LED/Halogen. You will need to ask Chris the Swede about the SAM installation. There is a wiring harness converter he has, and it also takes programming that he says he can do remotely.

Laci183

hello! I' like convert my MB w207's halogen headlight (A2078204861) to static led headlight (.A2078208061) Can I change cable harness? Can you help me? Thx.

Camber53

Pm me I will be able to do it