E-Class (W212) 2010 - 2016: E 350, E 550
Sponsored by:
Sponsored by: CARiD

Determine which airbag is leaking

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Feb 14, 2019 | 04:41 PM
  #1  
Paulcomi's Avatar
Thread Starter
Member
 
Joined: Jan 2019
Posts: 88
Likes: 12
2011 E550, 1999 E320
Determine which airbag is leaking

Just had an idea. I suspect that one of my airbags has a very slow leak but I can’t tell which one it is. I’m thinking of disconnecting the auxiliary battery and letting the car sit parKed a couple days until I can see which side lowers. Anyone else tryi it this way?
Reply
Old Feb 14, 2019 | 09:26 PM
  #2  
Tirgoman's Avatar
Super Member
 
Joined: Nov 2018
Posts: 510
Likes: 64
From: Dallas Texas USA
2023 AMG EQE 53
Get a spray bottle with some soapy water and start spraying each bag, you should see bubble at the leak
Reply
Old Feb 15, 2019 | 02:34 PM
  #3  
belarus27's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2013
Posts: 1,900
Likes: 210
From: Sacramento , CA
2010 e550 p2
If you live in a cold state just park it outside overnight , and in the morning you will see which one is leaking.
if not
like someone mentioned use a spray bottle maybe?
Reply
Old Feb 15, 2019 | 08:42 PM
  #4  
DFWdude's Avatar
MBWorld Fanatic!
20 Year Member
Photogenic
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 4,694
Likes: 1,829
From: Dallas-Ft.Worth,TX
2016 E350 Sport
What is in an airbag to cause a leak? I thought there was just the bag and inflator powder. Nothing under any pressure.
Reply
Old Feb 15, 2019 | 09:52 PM
  #5  
cadetdrivr's Avatar
MBWorld Fanatic!
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2014
Posts: 1,053
Likes: 355
From: USA - Minnesota
2014 GL350
Originally Posted by DFWdude
What is in an airbag to cause a leak? I thought there was just the bag and inflator powder. Nothing under any pressure.
Airmatic ***suspension*** airbags 😉
Reply
Old Feb 16, 2019 | 09:47 AM
  #6  
RA72825's Avatar
Banned
 
Joined: Oct 2005
Posts: 4,957
Likes: 1,640
Don’t assume it’s an air spring leak. I’ve had more than one Airmatic equipped MB. There are many points of potential failure. Your idea is not the right approach, sorry.
Reply
Old Feb 16, 2019 | 10:04 AM
  #7  
DFWdude's Avatar
MBWorld Fanatic!
20 Year Member
Photogenic
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 4,694
Likes: 1,829
From: Dallas-Ft.Worth,TX
2016 E350 Sport
Originally Posted by cadetdrivr
Airmatic ***suspension*** airbags ��
Ah, that optional "airbag" that no one ever sees, until it leaks.

I thought this was about the airbag (that everyone has) in the steering wheel, LOL.

Unspecific Thread labelling #87,673,

OK, carry on....

Last edited by DFWdude; Feb 16, 2019 at 10:07 AM.
Reply
Old Feb 16, 2019 | 11:19 AM
  #8  
kajtek1's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Liked
Loved
 
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Get a scanner who can read the system.
I don't have airmatic, but my iCarsoft has it in the menu, so I assume it would make full troubleshooting.
The system is very complex and car computer is not giving any feedback to the driver till it comes to complete failure. so scanning it periodically can save you lot of troubles on long run.
The deal is that small leak will not trigger any warning, but will wear out your compressor and flood the system with moisture, so by the time the small leak becomes big enough for warning, you have huge mess.
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 Feb 16, 2019 | 08:10 PM
  #9  
Arrie's Avatar
MBWorld Fanatic!
15 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Oct 2010
Posts: 5,141
Likes: 1,293
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
Originally Posted by kajtek1
Get a scanner who can read the system.
I don't have airmatic, but my iCarsoft has it in the menu, so I assume it would make full troubleshooting.
The system is very complex and car computer is not giving any feedback to the driver till it comes to complete failure. so scanning it periodically can save you lot of troubles on long run.
The deal is that small leak will not trigger any warning, but will wear out your compressor and flood the system with moisture, so by the time the small leak becomes big enough for warning, you have huge mess.
What warnings do you talk about? I have airmatic and it goes all the way down over night if I leave it at sports suspension mode but if I leave it in comfort it stays up. I leave my car very often for 5 days parked at airport and it has not leaked once yet when I leave it in comfort but in sport mode it will be down when I return.

Anyway, I don't get any warnings when car is down, just a message saying "Car is raising" when it pumps it up from the bottom.

Reply
Old Feb 17, 2019 | 03:28 AM
  #10  
Paulcomi's Avatar
Thread Starter
Member
 
Joined: Jan 2019
Posts: 88
Likes: 12
2011 E550, 1999 E320
That’s what mine does too if I park it in sport it will drop overnight.
Reply
Old Feb 17, 2019 | 03:29 AM
  #11  
Paulcomi's Avatar
Thread Starter
Member
 
Joined: Jan 2019
Posts: 88
Likes: 12
2011 E550, 1999 E320
I’ve been thinking about getting a scanner but I know nothing about them. It sounds like you do with scanner is a no regrets for service scanner that will give me all the information for my car and also my older 99 E320?
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 02:02 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