Xenon headlight auto-leveling control module - Mercedes-Benz Forum
 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 12-28-2004, 05:29 AM
BenzWorld Member
 
Lone Star SL500's Avatar
 
Date registered: Jul 2004
Vehicle: '99 SL500 Sport
Location: Houston, Texas
Posts: 52
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Xenon headlight auto-leveling control module

My xenons quit "self-leveling" and now they point towards the ground. Does anyone know the troubleshooting steps to uncover the fault?

Also, can the xenons be adjusted (aimed) manually? I saw the black thumbscrews at the rear of the housing, but what does each one do?

FS: '99 SL500 Sport, 90K miles, magma red, shell interior, nice, $21,500, Houston
Lone Star SL500 is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 01-05-2005, 03:21 PM
BenzWorld Member
 
Lone Star SL500's Avatar
 
Date registered: Jul 2004
Vehicle: '99 SL500 Sport
Location: Houston, Texas
Posts: 52
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
"auto-leveling" headlights

I have manually adjusted my lights but still need help diagnosing the "auto-leveling" circuit. Anyone have any ideas?

FS: '99 SL500 Sport, 90K miles, magma red, shell interior, nice, $21,500, Houston
Lone Star SL500 is offline  
#3 (permalink) Old 12-30-2008, 06:43 AM
BenzWorld Member
 
mbz.mwusa.net's Avatar
 
Date registered: Mar 2006
Vehicle: 1998 SL500
Location: Indiana, US
Posts: 107
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Xenon auto-leveling

My Xenon headlights stopped auto-leveling and are looking down now. Happened to both at the same time during driving. Checked fuses. Any ideas?

MIchael
mbz.mwusa.net is offline  
#4 (permalink) Old 02-12-2010, 07:59 AM
BenzWorld Newbie
 
Date registered: Feb 2010
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My driver's side headlamp leveler quit working but the passenger side is fine. I'm looking for the same help.
CLS Freak is offline  
#5 (permalink) Old 02-24-2011, 04:26 PM
BenzWorld Junior Member
 
Date registered: Feb 2011
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There are more dead threads on this forum than dead Libyans......
My 2000 S500 has the same problem. Factory Xenon’s that point straight down. Anybody got some ideas?

Thanks,
Jason
W220HI is offline  
#6 (permalink) Old 02-24-2011, 05:02 PM
Moving on
 
lynns's Avatar
 
Date registered: Jul 2006
Vehicle: Y2K SL500 Silver
Location: So. California
Posts: 8,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by lynns View Post
Did you ever find the answer to your Xenon auto-leveling not working?
Has ANYONE ever figured out what the answer is to BOTH Xenon's pointing towards the ground?

Please come back and let us know what the fix is.
lynns is offline  
#7 (permalink) Old 02-24-2011, 10:43 PM
Moving on
 
lynns's Avatar
 
Date registered: Jul 2006
Vehicle: Y2K SL500 Silver
Location: So. California
Posts: 8,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by mertd93
Hey Lynn,

There is a xenon self leveling control module that usually goes bad and needs to be replaced, p/n 1408207426 , this is the module that controls the headlight up and down, located in the passenger seat foot well, I might have a picture for you soon, but in the mean time there is one on eBay right now and I also have a used one for sale.

Here is a listing on ebay:
OEM Mercedes W140 Headlamps Control Module S600 S500 S - eBay (item 290388053067 end time Feb-28-11 12:54:52 PST) for $374.95 plus ship.

Hope this finally solves everyone's issues.

Mike
Thanks Mike. I looked it up in the EPC and sure enough that's the p/n and the answer to the Xenon problem so I'll post it giving you the kudos. FWIW, Parts.com shows an MSRP of $610.00 and a sale price of $418.60 plus S&H.
Attached Thumbnails
Click image for larger version

Name:	1408207426.jpg
Views:	328
Size:	20.5 KB
ID:	359237  

Last edited by lynns; 02-25-2011 at 11:16 PM.
lynns is offline  
#8 (permalink) Old 02-26-2011, 12:53 PM
BenzWorld Member
 
Date registered: Nov 2004
Vehicle: ML320, 1998. SL500, 2001, 230.000 +mls
Location: Beirut, Lebanon
Posts: 266
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for that.
Would a faulty module also cause the light to be high and low at different times?

Also, is there any ajustments at the wheels?

Per
per300 is offline  
#9 (permalink) Old 02-26-2011, 01:04 PM
Moving on
 
lynns's Avatar
 
Date registered: Jul 2006
Vehicle: Y2K SL500 Silver
Location: So. California
Posts: 8,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by per300 View Post
Also, is there any adjustments at the wheels?
"The front and rear axle sensors for the headlamp range adjustment sense any change in the vehicle level for the headlamp range adjustment control module. The control module compares the signals from the sensors with the headlamp adjustment and, if necessary, actuates the headlamp range adjustment motors in the headlamps to correct the angle of inclination. Correction of the angle of inclination is accomplished only when the signals for the changed vehicle level are present at the control module for a certain time. This prevents correction for short term changes in the level, e.g. suspension compression on rough roads. The ignition and low beam headlamps must be switched on for the electric headlamp range adjustment to operate."
lynns is offline  
Reply

  Mercedes-Benz Forum > Mercedes-Benz Roadster Forums > R129 SL Class


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Topic Author Forum Replies Last Post
Xenon auto leveling problem 78Lion W164 M-Class 1 04-08-2010 09:06 AM
auto leveling for xenon headlamps OMER PASA Audio & Telematics Forum 5 08-07-2006 05:35 PM
Auto-Leveling in Bi-Xenon lights ekhalil W163 M-Class 7 01-19-2004 10:03 AM
Xenon headlamp auto-leveling wiring diagram/pinouts Madd_Scientist R170 SLK Class 4 05-14-2003 07:16 PM
How to check the Xenon head lights auto-leveling feature Russell W163 M-Class 4 03-18-2002 04:03 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome