Is it the air spring?

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Old Mar 30, 2020 | 09:55 PM
  #1  
therocket's Avatar
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2013 CLS550
Is it the air spring?

This happens after 2-3 days of no movement. 1. I assume a small leak in the air spring?
2. Can it be anything else?
3. Can i just change one side with Arnott or it needs to be both sides?


Last edited by therocket; Mar 31, 2020 at 06:46 AM.
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Old Mar 31, 2020 | 08:34 AM
  #2  
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From: North Cali
2005 SL500, 2015 CLS400
1. Yes, it does look like a leak in the system. Obviously nobody can confirm 100% without a diagnostic tool

2. Yes, it might be a leak not in the strut itself. It might be a bad valve, or a hole in the line. there are common and uncommon issues.

3. From what I know arnott has a lifetime warranty on any part they sell. I'm from the R230 forum, where the models have ABC suspension, but didn't read anything bad about the company.
does it sag only one side? Then you should be safe replacing only one unit, as they're pretty independent. Again, the best way to confirm - find someone who could double check all the fault codes.

Regards
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Old Mar 31, 2020 | 09:16 PM
  #3  
therocket's Avatar
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2013 CLS550
Originally Posted by Ghostty
1. Yes, it does look like a leak in the system. Obviously nobody can confirm 100% without a diagnostic tool

2. Yes, it might be a leak not in the strut itself. It might be a bad valve, or a hole in the line. there are common and uncommon issues.

3. From what I know arnott has a lifetime warranty on any part they sell. I'm from the R230 forum, where the models have ABC suspension, but didn't read anything bad about the company.
does it sag only one side? Then you should be safe replacing only one unit, as they're pretty independent. Again, the best way to confirm - find someone who could double check all the fault codes.

Regards
Thank you for the detailed response. Does a diagnostic tool show if there is a leak? Not sure if that would throw a code.
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Old Mar 31, 2020 | 10:08 PM
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From: North Cali
2005 SL500, 2015 CLS400
It might throw a generic code like "pressure too low" or maybe a device got shut off because of safety relay. But I doubt it will tell you exactly that there is a leak. It might show you where to start the search for problem.

Check this link, found on google:

http://www.mercedesmedic.com/air-sus...isit-workshop/
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Old Apr 1, 2020 | 09:42 PM
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2013 CLS550
Originally Posted by Ghostty
It might throw a generic code like "pressure too low" or maybe a device got shut off because of safety relay. But I doubt it will tell you exactly that there is a leak. It might show you where to start the search for problem.

Check this link, found on google:

http://www.mercedesmedic.com/air-sus...isit-workshop/
This is very useful. Thank you so much!
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