C219 CLS55 and CLS63, 2004-2010

4 Matic System

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Old Jul 29, 2020 | 09:44 AM
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2011 CLS 550
4 Matic System

Ok, guys, here it is. I just replaced my driver side air strut. It blew out on me. It wasn't a hard job but I ran into a couple of things the YouTube video's don't tell you. Maybe because I have the last year on the W219. They never mention 2011, it's always 06-08 and 09-10 then skips to 12-15 for the w218. But anyway, long story short, I installed the air shock, it inflates and it holds when I turn the car off. But for some reason, after sitting for 24 hours, it drops on the same side I put the new air shock on. I spayed soap water on the connector on top where the air plugs in, no leaks there. I didn't spray the boot yet on the air strut, but it's brand new, and it holds for hours after turning the car off. It's got to be bleeding down from a solenoid valve or somewhere in between. What do you guys think?







Last edited by kbanks45; Jul 29, 2020 at 11:22 AM.
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Old Jul 30, 2020 | 12:42 PM
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No feedback from nobody huh... Wow.... Maybe I'm the only one with air-matic issues... Well, I guess my next move is to check/replace the leveling valve. I read these leak internally after a while...



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Old Jul 30, 2020 | 05:45 PM
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Your best bet is to post this in the W211 E63 forum. Those guys know everything about airmatic.
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Old Aug 1, 2020 | 07:13 PM
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Have you plugged you car into STAR after replacing the strut and done the calibration? Not sure if this has anything to do with it. I remember when my strut was replaced apparently that had to be done, I never do it personally though.
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Old Aug 3, 2020 | 11:41 AM
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Originally Posted by C32owner
Have you plugged you car into STAR after replacing the strut and done the calibration? Not sure if this has anything to do with it. I remember when my strut was replaced apparently that had to be done, I never do it personally though.
Naw, I wasn't aware that had to be done. It's sounding like I need a leveling valve. That appears to be the one spot where you can have a slow leak when the car isn't running. Bad O-rings or dirt/debris in the valve over time. It only bleeds down after 12-24 hours, while driving and parking up to 12 hours, everything looks good. Each side has a connection on the valve. And with a brand new air shock, it shouldn't be bleeding down.
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Old Aug 3, 2020 | 11:44 AM
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Originally Posted by Cylinder Head
Your best bet is to post this in the W211 E63 forum. Those guys know everything about airmatic.
Yeah, maybe I should...lol
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