Airmatic struts - Mercedes-Benz Forum
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post #1 of 31 (permalink) Old 06-20-2017, 05:31 AM Thread Starter
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Airmatic struts

Okay so I had a problem with both my front struts leaking and going out to where the car doesn't lift on egoing out 3months apart so far I've gone through two so I bought them.one of the Airshocks is from a 2006 Mercedes w220 and the other is its regular one that fits! Every time my compressor kicks on when I turn my car on! I looked at the compressor and it was sagging and missing screws so I picked it up and tied it down. Before that my right front shock which is from the 2006 Mercedes is slightly different design but fits my car perfect which is a 2000 w220 s500 and now that shock from the newer car has gone out it makes a little air leak noise on the shock and the car goes back done so should I buy another shock that's made for the car ? I'm going to have to get a new one anyways cause this is the third shock I'm going to have on my car and i know it's a common problem but I guess that's what I get for buying used any ideas will help and suggestions as well please asap!
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post #2 of 31 (permalink) Old 06-20-2017, 06:32 AM
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While the strut is probably the most common failure, a leaking air line or valve can also cause the problem. There is a lot of info on Airmatic problems on this and other W220 forums, and on the web in general. This https://w220.ee/Airmatic will give you info on the strut and the compressor.

If the strut is the problem, and you can install the struts yourself, and if you are in a market covered by Arnott, most of us elected to purchase lifetime-warranted rebuilt struts from them. If you are a member of the Forum, Arnott offers a discount.

(It is helpful to give details on the vehicle and your location when asking questions.)

While there is occasionally a problem with one of the rebuilt struts, Arnott has always promptly replaced the faulty item.

In some markets, your dealer may offer rebuilt struts, but usually with a shorter warranty and higher cost.

Wally
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post #3 of 31 (permalink) Old 06-20-2017, 07:45 AM
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My first guess would be that the strut from the 2006 S-class was on its way out already. As far as fitment, if your 2000 S500 is a 2WD car, then the struts are the same for any 2WD W220. In the USA, that means model years 2000 through 2006 (Europe had W220's in 1999, I think).

Question for the OP: might this 2006 strut be from a 4-Matic?

If so, then question for the forum: are AIRmatic struts for 4-Matics different somehow from the non-4WD cars, and if so, is it in any meaningful way?

2000 S430 (Dad's car, used for special occasions)
2000 S500 (wife's DD: my first W220 project car)
2003 S600 ("sex on wheels"--second w220 project car)
2003 S430 (one of two current DD's--third W220 project car)
2005 E320 CDI (the other current DD--first W211 project car)
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post #4 of 31 (permalink) Old 06-20-2017, 09:35 AM Thread Starter
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Thanks for the info I've looked at the valve block and don't see any leakage but when I checked my compressor it was sagging and on it's last bolt sideways! The struts made a little leak sounds!do I have to remove my bottom number to test my valve block lines?
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post #5 of 31 (permalink) Old 06-21-2017, 02:13 AM
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Valve blocks leak internally so you can't see a leak
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post #6 of 31 (permalink) Old 06-21-2017, 07:45 AM
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Hmm...if the struts *are* leaking, then that's one thing you'll need to replace anyway.

Arnott makes two types of struts, the remanufactured ones and their "new design" ones. My understanding is that the "new design" ones are not adjustable for ride stiffness, but the remanufactured ones *are*. I chose the remans.

Additionally, it's possible that your valve block is also leaking.

2000 S430 (Dad's car, used for special occasions)
2000 S500 (wife's DD: my first W220 project car)
2003 S600 ("sex on wheels"--second w220 project car)
2003 S430 (one of two current DD's--third W220 project car)
2005 E320 CDI (the other current DD--first W211 project car)
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post #7 of 31 (permalink) Old 06-21-2017, 08:31 AM
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A quick note on the Arnott struts. They may not be making the remanufactured ones for the front anymore. So your only choice would be the new ones that are not adjustable for ride stiffness. They are no longer accepting the fronts for trade in.

G.
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post #8 of 31 (permalink) Old 06-21-2017, 12:04 PM
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At this age there are too many defective ones that cannot be rebuilt in a cost effective manner

Before the struts were still in good shape and all they had to change was the rubber air bladder . At this age other parts of the used strut are no longer usable
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post #9 of 31 (permalink) Old 06-21-2017, 12:23 PM
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Ah, I see. Does that mean that in the future we'll have to go with Bilstein if we want to keep the adjustable ride stiffness?

2000 S430 (Dad's car, used for special occasions)
2000 S500 (wife's DD: my first W220 project car)
2003 S600 ("sex on wheels"--second w220 project car)
2003 S430 (one of two current DD's--third W220 project car)
2005 E320 CDI (the other current DD--first W211 project car)
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post #10 of 31 (permalink) Old 06-25-2017, 10:11 AM
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Ebay is your friend

I just installed one of these


Front Air Suspension Strut For Mercedes S Class W220 S430 S500 S600 S55 AMG Sale | eBay

There is youtube video HOWEVER it doesn't tell about the 5mm hex key socket you need and a propane torch & the wire clip that retains the 2 plugs.

The loctite must be melted by torch or you are royally screwed

It also fails to mention you need a ball joint separator to release the top bracket with the nut
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