S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Water getting trapped in headlight

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 8, 2008 | 10:44 PM
  #1  
trumpet1's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: May 2007
Posts: 2,071
Likes: 2
2007 S600
Water getting trapped in headlight

I've noticed this ever since I bought my car two years ago , but when I drive through a touchless car wash, my front left headlight housing (not the right one) holds a slight amount of moisture for a short period of time. The reason I brought this up is because last week when I took my wife's C class in for routine service, I noticed another W221 with the exact same problem. Left headlight holding moisture. Has anyone else noticed this?
Reply
Old Nov 8, 2008 | 11:21 PM
  #2  
MB Fanatic's Avatar
MBWorld Fanatic!
 
Joined: Feb 2004
Posts: 5,143
Likes: 1
From: South Orange County, CA
4 wheels
Originally Posted by trumpet1
I've noticed this ever since I bought my car two years ago , but when I drive through a touchless car wash, my front left headlight housing (not the right one) holds a slight amount of moisture for a short period of time. The reason I brought this up is because last week when I took my wife's C class in for routine service, I noticed another W221 with the exact same problem. Left headlight holding moisture. Has anyone else noticed this?
I think there was a TSB for this. My mom's 07 S550 has this same problem and the dealer replaced the entire unit and both Xenon bulbs.

Best to ask Konigstiger about this or check the recall/tsb thread. Hope you get it resolved.
Reply
Old Nov 9, 2008 | 09:09 AM
  #3  
trumpet1's Avatar
Thread Starter
MBWorld Fanatic!
 
Joined: May 2007
Posts: 2,071
Likes: 2
2007 S600
Originally Posted by MB Fanatic
I think there was a TSB for this. My mom's 07 S550 has this same problem and the dealer replaced the entire unit and both Xenon bulbs.

Best to ask Konigstiger about this or check the recall/tsb thread. Hope you get it resolved.
I will probably get it handled eventually (before warranty expires). It only does it when forced spray hits it like in the car wash. The only thing that concerns me is wiring could corrode from this or the bulb might go bad quicker.
Reply
Old Nov 9, 2008 | 01:51 PM
  #4  
RajwanyS550's Avatar
Super Member
15 Year Member
Liked
 
Joined: Jan 2008
Posts: 650
Likes: 24
From: Texas
2015 White/brown Nappa S550, '13 S550 4 matic, 11 S550 sold, '10 S550 Sports BLACK 08 S550 P3 sport
Originally Posted by trumpet1
I will probably get it handled eventually (before warranty expires). It only does it when forced spray hits it like in the car wash. The only thing that concerns me is wiring could corrode from this or the bulb might go bad quicker.

had the same problem on my Lexus. the dealer replaced both headlight units. no problem. said something to do with the seals drying up..
Reply
Old Nov 9, 2008 | 02:18 PM
  #5  
Diesel Benz's Avatar
MBWorld Fanatic!
15 Year Member
 
Joined: Dec 2006
Posts: 6,499
Likes: 336
From: Europe
223.168 & 213.012 & 906.633 & 214.005
Originally Posted by RajwanyS550
had the same problem on my Lexus. the dealer replaced both headlight units. no problem. said something to do with the seals drying up..
Sounds odd if the seals have dried up, the car isn't old at all. Also I understood water was getting in only when pressure washed. Cannot think of a good reason though, other than some sort of a seal leak if it doesn't come from an open rear flap.
Reply
Old Nov 12, 2008 | 04:34 PM
  #6  
tomd's Avatar
Senior Member
20 Year Member
Photogenic
Liked
Loved
 
Joined: Jun 2004
Posts: 269
Likes: 20
From: the sane part of MA
2025 E450 4Matic
Originally Posted by RajwanyS550
had the same problem on my Lexus. the dealer replaced both headlight units. no problem. said something to do with the seals drying up..
Had both headlight units replaced in 2007, on my wife's 2006 RX.

That car ended up being so problematic we dumped it for the ML350. The MB hasn't seen the shop since new (except oil change)
Reply

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


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 01:18 PM.

story-0
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-1
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-2
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-3
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-4
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-5
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-6
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-7
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-8
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-9
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE