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

W221 Seats won't deflate entierly

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 26, 2018 | 10:53 AM
  #1  
Muki450's Avatar
Thread Starter
Newbie
 
Joined: Nov 2018
Posts: 3
Likes: 0
S450 L 4matic
Help me please!! W221 Seats won't deflate entierly

Hello guys,
I am a new member om the site.
I'm coming from switzerland and bought an S450 4matic Long last week. I think it's an engin that doesn't exist in USA.
I'will make an complete presentation of the car next days. Promise!
I just have one probleme and one question. I have the multicontour dynamic seats. The probleme is: I can inflate my driver seat and deflate it. But the central part of the seat (top and bottom) doesn't want to deflate completely. And my left side dynamic doesn't work.
Does anyone has a solution to fix it?

Thank you for answer.

Last edited by Muki450; Nov 27, 2018 at 07:43 AM. Reason: Issue
Reply
Old Nov 27, 2018 | 07:44 AM
  #2  
Muki450's Avatar
Thread Starter
Newbie
 
Joined: Nov 2018
Posts: 3
Likes: 0
S450 L 4matic
No one can help me??
Reply
Old Nov 28, 2018 | 01:19 AM
  #3  
lika1's Avatar
Member
 
Joined: May 2007
Posts: 95
Likes: 17
S550 4MATIC
Did you ensure the center bladders are set to 0? I know they are separate settings. As to the left side dynamic not working, it's most likely a ruptured air bladder. I fixed mine myself by taking the back of the seat off (2 screws on the bottom), unhooking the leather so I could peel it forward to expose the bladder. Once I got the bladder exposed, I unhooked the bladder that was split at the seam, laid it flat on a ceramic tile, covered with wax paper, and used an iron to create a new seam. The wax paper ensured I didn't melt the air bladder to the iron. Test to ensure it's holding air before putting everything back in reverse order. The alternative is to bring it to the dealer to replace the seat, which would be very costly. This fix worked for me, and took all of ~20 min to complete. Hope this helps!
Reply
Old Nov 28, 2018 | 02:17 AM
  #4  
Muki450's Avatar
Thread Starter
Newbie
 
Joined: Nov 2018
Posts: 3
Likes: 0
S450 L 4matic
Yes for the left dynamic, I'll try to do that.
All settings are on 0, the lumbar and the shoulder bladder. The massage and dynamic options are working very good too. But they don't want to deflate entierly. I tried not to use the car for 3-4 days to see if it will deflate, but nothing happened.
Thank you for help!
Reply
Old Nov 28, 2018 | 10:03 AM
  #5  
konigstiger's Avatar
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Have someone pull fault codes using MB diagnostics. As a matter of reference (may not be directly related to your problems) attached bulletin explains multiple problems can be resolved by reviewing stored fault codes.
Attached Files
File Type: pdf
LI91.25-P-046797_Ver_2.pdf (50.6 KB, 943 views)
Reply
Old Nov 29, 2018 | 01:17 PM
  #6  
Bklyn's Avatar
Member
 
Joined: Oct 2018
Posts: 249
Likes: 19
S550
Originally Posted by lika1
Did you ensure the center bladders are set to 0? I know they are separate settings. As to the left side dynamic not working, it's most likely a ruptured air bladder. I fixed mine myself by taking the back of the seat off (2 screws on the bottom), unhooking the leather so I could peel it forward to expose the bladder. Once I got the bladder exposed, I unhooked the bladder that was split at the seam, laid it flat on a ceramic tile, covered with wax paper, and used an iron to create a new seam. The wax paper ensured I didn't melt the air bladder to the iron. Test to ensure it's holding air before putting everything back in reverse order. The alternative is to bring it to the dealer to replace the seat, which would be very costly. This fix worked for me, and took all of ~20 min to complete. Hope this helps!
This is AMAZING. My 2008 has some problems with the drivers seat. They did a diagnosis and said they think it is a bad dynamic seat module. Cost off replacement is $552.00.

Can you tell me one thing? How do you, as you put it, "Did you ensure the center bladders are set to 0?? How does one do that and why is that important. I am new to MB and have a lot too learn. thanks in. advance for any aid you might provide.
Reply
Old Nov 30, 2018 | 12:53 AM
  #7  
lika1's Avatar
Member
 
Joined: May 2007
Posts: 95
Likes: 17
S550 4MATIC
I can't remember how to set it as I no longer own that vehicle, but I do remember two different settings for top section and lower lumbar section. Nothing important about it except the OP mentioned seats will not deflate entirely.
Reply
Old Nov 30, 2018 | 07:18 AM
  #8  
DRTYLNDY's Avatar
Super Member
15 Year Member
Photogenic
 
Joined: Jan 2006
Posts: 579
Likes: 37
My 2007 S65 drivers seat does the same thing every few months and has for a few years now.
What I do is actually go into the seat and mess with the bladder levels. I fully inflate them and then deflate them and usually
it goes back to normal. Sometimes it takes a couple tries but so far it has worked for me. No big deal in my eyes.
Good luck
Johan
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Nov 30, 2018 | 10:28 AM
  #9  
Bklyn's Avatar
Member
 
Joined: Oct 2018
Posts: 249
Likes: 19
S550
Originally Posted by DRTYLNDY
My 2007 S65 drivers seat does the same thing every few months and has for a few years now.
What I do is actually go into the seat and mess with the bladder levels. I fully inflate them and then deflate them and usually
it goes back to normal. Sometimes it takes a couple tries but so far it has worked for me. No big deal in my eyes.
Good luck
Johan
Wow. I must try this! Thanks
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 09:46 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE