CLK-Class (W209) 2003 on: CLK 270 CDI, CLK 200K, CLK 200 CGI, CLK 240, CLK 320, CLK 350, CLK 500, CLK 550 [Coupes & Cabriolets]

Headlight flicker

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Old Feb 11, 2012 | 11:15 AM
  #1  
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'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)
Headlight flicker

Quite sometime ago I thought I had noticed my passenger side headlight (OEM HID) flicker at night, thought it might be a bad bulb. I changed both the bulbs out and still noticed it once in a while when driving. Now with the new bulbs in (3rd new set) I actually saw it flicker at a standstill (when the lights were on and I was standing outside the car) - it has never happened on the drivers side.

Could this be a possible bad balast? Now that the car is off the road for a few weeks and the front end is off it would be an optimal time to get this resolved.

Cheers.
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Old Feb 11, 2012 | 12:25 PM
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Hey Kev,
I had the same problem on the same (passenger) side low beam. My shop replaced the lamps control module and it fixed the problem.

-Good Luck
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Old Feb 11, 2012 | 03:07 PM
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Lamp control module = ballast ???
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Old Feb 11, 2012 | 04:15 PM
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Originally Posted by M-bENZ
Lamp control module = ballast ???
No, I don't think that was it. Our cars have modules for everything, even our power seats have a module!
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Old Feb 11, 2012 | 05:09 PM
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I know that we have the power seats module ...just didnt know that we have the lamp module too. If the power seat module goes bad your battery will go bad too. Its happened to my friend CLK one time.
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Old Feb 12, 2012 | 12:13 AM
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From: A Canadian in Dubai, United Arab Emirates
'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)
Originally Posted by 2MCHCAR
Hey Kev,
I had the same problem on the same (passenger) side low beam. My shop replaced the lamps control module and it fixed the problem.

-Good Luck
Thanks dude, I'll get the car over to MB when I get it back and have them take a look.
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Old Feb 12, 2012 | 10:42 AM
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I am having that problem now... Low beam passengers side.
Going to replace both bulbs with 6000k but tell me more about said module... If its like anything else from MB Im sure it was expensive to replace... Any estimate on cost for this?
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Old Feb 12, 2012 | 11:35 AM
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Good News! I keep all my maintenance/repair paperwork and I found the module part number!

Headlight Control Module
203 820 25 26

My extended warranty paid for my repair, but you can buy it on parts.com for $513!
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Old Feb 12, 2012 | 11:51 AM
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From: A Canadian in Dubai, United Arab Emirates
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Oh man that part is going to be nasty expensive at MB here...
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Old Feb 12, 2012 | 01:50 PM
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$513 ? wow man...... I need to check mine soon my warranty is running out.
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Old Feb 12, 2012 | 09:48 PM
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About a week ago, my driver side HID did not ignite when I started the car (switch set to "Auto"). ...Message was sent to MFD and everything... Shut car down, and restarted and it ignited just fine. (Message went away, thankfully.) Turned lights on and off several times manually, and they both ignited every time. I have been using the lights (switched manually, instead of leaving them on "Auto") ever since, and have not had the problem recur. Not that I have any idea that the "Auto" setting had anything to do with it... Anyway, for now I'm concluding it was just a fluke.
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Old Feb 12, 2012 | 10:55 PM
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I had to replace the control unit of one of my headlamps as well last year:
Control unit for right xenon headlamp
Part no: 203-820-93-85

I paid $750 for the part and then one hour of labour.

It was easy for the dealship to find the root cause. They have a spare unit in the garage to test.

Last edited by mis3; Feb 12, 2012 at 11:03 PM.
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Old Feb 12, 2012 | 11:03 PM
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Originally Posted by mis3
I had to replace the control unit of one of my headlamps as well last year:
Control unit for right xenon headlamp
Part no: 203-820-93-85

I paid $750 for the part and then one hour of labour.
Holy crapLet's hope it the bulb
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Old Feb 13, 2012 | 12:04 AM
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From: A Canadian in Dubai, United Arab Emirates
'05 C200K SS, '05 Kleemann CLK500K, '08 Hummer H3 & '92 Z34 5sp (track car in Canada)
Originally Posted by M-bENZ
$513 ? wow man...... I need to check mine soon my warranty is running out.
Andy, get both your replaced then sell the 'still working in perfect condition' used ones to be for $100
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Old Feb 13, 2012 | 05:24 PM
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Originally Posted by Kevwood
Andy, get both your replaced then sell the 'still working in perfect condition' used ones to be for $100
To you ? I plan to go to indie shop this friday coming up for rear main seal, AC stepper motor and those lamp control module too. Hoping the warranty cover all that. I know they will pay for the rear main seal for sure but just not the other two. We'll see

Last edited by M-bENZ; Feb 13, 2012 at 08:34 PM.
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Old Feb 13, 2012 | 06:27 PM
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Originally Posted by M-bENZ
To you ? I plan to go to indy shop this friday coming up for rear main seal, AC stepper motor and those lamp control module too. Hoping the warranty cover all that. I know they will pay for the rear main seal for sure but just not the other two. We'll see
Going to an indie for warranty works?
If under warranty, why not go to the dealership?
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Old Feb 13, 2012 | 08:23 PM
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The owner used to work for Dealer ( he knows what he doing) and he is my friend too so why not help him out .
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Old Feb 14, 2012 | 02:08 AM
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From: A Canadian in Dubai, United Arab Emirates
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Yep, I can tell from here that both your headlight modules need to be replaced with new ones. Then the old ones can be sent to me in Dubai for 'disposal'
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Old Feb 14, 2012 | 06:55 AM
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It is usually the ignitor modules in or on the lamps that fail. Benz sells a repair kit.

See DTB pdf.

https://mbworld.org/forums/attachmen...acement-1-.pdf

Last edited by Glyn M Ruck; Feb 14, 2012 at 07:05 AM.
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Old Feb 14, 2012 | 07:01 AM
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Originally Posted by Glyn M Ruck
It is usually the ignitor modules in or on the lamps that fail. Benz sells a repair kit.
Would that be the one Carlos mentioned for 5 bills off parts.com?
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Old Feb 14, 2012 | 07:06 AM
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See pdf just posted above. Sorry you were too quick for me while I checked my files.
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Old Feb 14, 2012 | 07:25 AM
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From: A Canadian in Dubai, United Arab Emirates
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Originally Posted by Glyn M Ruck
See pdf just posted above. Sorry you were too quick for me while I checked my files.
All thanks to Kleemann, ohhhhhh yaaaaaah
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Old Feb 14, 2012 | 07:46 AM
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late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Indeed!
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Old Feb 14, 2012 | 07:48 AM
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From: A Canadian in Dubai, United Arab Emirates
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Thanks for the PDF, that is very usefull pal.
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Old Feb 14, 2012 | 07:55 AM
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No probs Kev. I've posted it many times. If Xenon = present is set & lamps are good it's always the damn ignitors. Relatively easy DIY. Beats stripping the headlights with a heat gun to get the lens off or replacement of the whole unit.
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