Hello,
I have a few issues with Right and Left headlights throwing DTCs on a 2011 C63 PFL.
Voltage outside of range, sensor for active curve illumination, actuator motor, etc...

The previous owner vaguely indicated that he installed complete new headlight assemblies, with HID lights but never provided details...
I looked through the forum and searched for some clarification but could not identify these for sure.
I feel that the light output is not very good for both low and high beams, although when projecting on a wall it "seems to look ok".

Could you please confirm what is installed here by simply looking at the pics below?
There is also a "Blue" film that was installed over the headlights (to protect them from debris), which I am considering removing, not sure yet.
Any feedback is very much appreciated, thank you.

 

More than 120 views and not 1 comment?
I see you guys are as perplexed as I am then...

After driving a couple of evenings, I absolutely need to do something about the lights.
These lights are not bright at all, and there is clearly something going on.
Even putting the full headlights on does not provide enough light IMO.

Lights seem to be otherwise placed correctly.
Lights shine about knee high when the front is about 5-6 meters from the wall.

 

Well, this issue has multiple possibilites.

Are those OEM headlights or aftermarket replacements?
Are they OEM Halogen headlights with an HID "kit" added?
Are they OEM HID headlights with good quality ballasts and d1s bulbs?
How many hours on the bulbs?

Once you can answer all of those there are a few things you need to do

Remove that blue film, it significantly reduces lux level (even a clean film reduces lux but nowhere close to anything pigmented)
Aim them properly; drive right up to a wall on level ground and then mark the centre of the hotspot, then reverse about 8-10m and adjust to be slightly below your marks and ensure they don't move drastically to the left or right as well.
After all of that you can do a simple lux test using an app on your phone to determine if you actually have a very weak setup or if it is performing normally but your expectations are higher than possible, and then it is time for retrofitting or spending more on higher performance bulbs etc...

Edit; after looking a little more closely are your pic, and taking into consideration that you have a number of codes, you don't have OEM HID headlights installed so the quality is likely very poor in terms of output. Buying OEM lights or retrofitting with better performing projectors is your option

 

I will remove the film, thank you for the feedback. I felt as well that this could not help too much...
The previous owner indicated that he replaced the entire headlight assemblies from Halogen to HID. In fact, the car title was amended to show the HID (Necessary in Taiwan).
I am not sure if the housing is a proper HID housing or not. Is there a way to tell this?

You may be very correct in your thinking that these are not OEM HIDs.
I will need to remove these and check what is installed and report here.
I can try from the passenger side that has a bit more room and post pictures here for feedback.

Are there any suggestions on better HIDs to get? I would like around 5500-6000K for the color.

Thank you!

 

Take a photo of the back of the bulb, remove the cap on the rear and get a good photo. Also, if the headlights are OEM there should be mercedes part numbers in the housing plastic. Sounds like you might need some coding work if thats possible to convert your car to the lighting package in order to remove the error messages, but I'm not too familiar with all of that

As for performance, you first need to identify if you can get any benefits from spending money on better bulbs. If the housings are sub standard it won't matter what you put in them so start from there first, followed my ensuring good aim.

 

I did not get enough time today to investigate the headlights in depth, but had a few minutes to take some pics.
As suggested, I removed the blue stickers that were on the headlights. Did not turn them on yet to appreciate the difference, will do that tomorrow.
However, the picture here is quite telling of the difference...
I will let you guess which one has the sticker already removed.




Some quick pics of what I could do with the limited time, will get better ones soon.




The other side has an HID, but for some reason the picture did not take, will have to do again tomorrow.
The headlights do not have any kind of part numbers, so likely cheap aftermarket housings...

Thank you!

 

Finally got around to taking care of the lights tonight.
Replaced the H7 and the Xenon bulbs and there is A LOT more light now...(Removing the Blue stickers probably helped a lot too)
I will be adjusting the light pattern tomorrow evening, shifted too far to the right I feel.
The break in the pattern with the diagonal line going to the right is happening in the middle of my lane in front of the car, instead of what I feel should be almost at the lane divider in the center.

The Xenon I removed had the brand stickers removed, so no idea what these were...
I posted a pic for the curious minds. I see a sticker mentions "Ibeven".

These are the DTCs I was getting, will check tomorrow what is still there... These were all A+S
E2n1 - Right Xenon headlamp
A23955 - The control unit 'Headlamp range adjustment' has a malfunction. The component is not configured.
A8041C - The xenon bulb has a malfunction. The voltage value is outside the permissible range.
A83800- The actuator motor for the active curve illumination has a malfunction.

E1n1 - Left xenon headlamp
A8041C - The xenon bulb has a malfunction. The voltage value is outside the permissible range.
A8372A - The sensor for the active curve illumination has a malfunction. There is no signal change.
A83800 The actuator motor for the active curve illumination has a malfunction.

Pic of what was acquired today below. (The bulb visible in the OSRAM box is the old one, new ones have a bluish tint)
Thank you again for the information!

PS: What's up with the strange text export from the PDF files exported from Xentry?
All I get is a bunch of gibberish letters with circles around them when I try to copy text to paste somewhere else...
Had to export from Acrobat to Word to be able to copy/paste easily.