W211 AMG Discuss the W211 AMG's such as the E55 and the E63

e55 rear air suspension drop???

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Old Jan 22, 2014 | 11:16 AM
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2003 e55
e55 rear air suspension drop???

My rear suspension drops to the ground over night in sub zero temperature.
It did raise up again once it got a little warmer and it stays inflated as long as is not too cold.
Now i tryed and sprayed soapy water over the hose conections in the rear and no leaks so far.if it wasnt a leak in one or both of the air bags could they still drop? I mean since they deflated i kn for sure there is a problem with the system.but if the air bags souposely would be good, could they still drop if there was a leak somewhere else in the system? Or they would keep the air when the car is stationary?

Last edited by aggi78; Jan 22, 2014 at 11:20 AM.
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Old Jan 22, 2014 | 11:18 AM
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2003 e55
I am trying to figure it out if the airbags are bad for sure and not bother looking fir other leaks.the front suspension is still up.could there be a leak to affect just the rear suspension other than the airbags them selfs?
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Old Jan 22, 2014 | 01:47 PM
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sounds like a pita, mine leak down over about 1 month if my car sits that long. id guess leaking bags or lines that go to the manifold. i believe the manifold is above the rear crossmember... somewhere in that erea, maybe someone can chime in with a air line diagram???
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Old Jan 22, 2014 | 02:16 PM
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This has been covered many times. Searching will yield much faster replies than making a post and hoping someone replies with the correct answers.
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Old Jan 23, 2014 | 09:23 AM
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mine does the exact same thing, leaks down over night when its cold out, otherwise it stays inflated for much longer, it'll probably be a pita trying to find the leak when its that slow. Im waiting till it gets more pronounced.
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Old Jan 23, 2014 | 02:19 PM
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Try leaving the car in the raised suspension setting and it probably won't drop that quickly
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Old Jan 23, 2014 | 09:12 PM
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2003 e55
Rigth now is below zero outside at night and pretty cold day time.i started the car but i wont raise..i am wondering if the compressor starts by it self trying to keep the car level while is stationary..i sm afraid to burn it out before i get to change the air bags.i just bought the arnott rear bags.i am pretty sure tgere is a leak in the selenoid valves of the actual bags...
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Old Jan 24, 2014 | 02:20 AM
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Iv replaced all my airbags with arnott and it does still seem to creep a touch in the rear only. I suspect the valve bank attached to the compressor. Im tempted to maybe pull it off and take a look at it at some stage has anybody done this or is it a waste of time?

Last edited by austingtir; Jan 24, 2014 at 03:47 AM.
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Old Jan 25, 2014 | 09:02 AM
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2003 e55
I just bought the arnotts for rear.thr also have a selenoid valve si once inflated the should not leak any air or yiu can not deflate them without the mercedes star program to command the valvs to open.if your are droping in the rear most likely u still have a problem with the bags themselfs.
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Old Jan 25, 2014 | 09:07 AM
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2003 e55
It is ok for the air to compress very slightly in very cold temoeratures.but not drop more than normal.if you have a leak in the block that will make your compressor work harder and start more often while the car is running.every 15 min the car does a self level adjustment but unless u use ur buttons to play with the suspension, it shouldnt start too often..
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Old Jan 25, 2014 | 03:09 PM
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Originally Posted by aggi78
I just bought the arnotts for rear.thr also have a selenoid valve si once inflated the should not leak any air or yiu can not deflate them without the mercedes star program to command the valvs to open.if your are droping in the rear most likely u still have a problem with the bags themselfs.
I really doubt its the bags or the lines going to them. On mine it will creep to a certain level like probably 1/2" lower and not go anymore which makes me think its got to be a valve somewhere or its just somehow normal for it to do that.
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Old Jan 28, 2014 | 04:00 PM
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Going through same issue now....hoping it is just the cold weather here (-5) in Illinois. When the car is parked outside at work it drops completely down in the rear in a matter of 2 hours. When I park it in my garage (40 degrees) it stays up all night.......gotta love airmatic....looks like I might have to check into Arnott.
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Old Jan 28, 2014 | 08:16 PM
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If your rear air suspension have been dropping after shutting off your car, whether it drops within hours, during overnight or sitting after extended period of time, I'd definitely recommend replacing your rear suspension with Arnott's W211 rear airmatic version. You should replace when them you can, earlier the better. Because the current rear air spring will eventually stop working.

Sorry I do not have E55, maybe someday! But I have E500, my rear suspension have been dropping everytime the since I purchased it about 3 year ago. But this past christmas, the rear suspension stopped raising and infamous red message stop too low finally showed up.

I replaced left rear air spring (as right side drop more than left side) myself from Arnott on a cold Saturday morning after the end of 1st Polar Vortex. I was working on it 12pm until 3am LoL. I am no mechanic, but I followed the instructions from Arnott and this forum. Having DAS Star and right tools helped alot. Try not to use profanities =). The next day, the rear suspension stayed up with no drop! The car has left OEM and right Arnott springs and I was really shocked! Its has been almost 3 weeks and no more drop! I'll have eventually replace the right side when the weather is warmer, or when the right side starts dropping. I hope I can finish it sooner than 3am lol.

I believe cold weather does affect airmatic in some way based on my experience. I get blue/white Airmatic visit workshop alot during the cold weather than in summer.

Last edited by Round Goby; Jan 28, 2014 at 08:19 PM.
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Old Jan 31, 2014 | 09:44 AM
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2003 e55
Anytime tge suspension drops all the way there is a leak.if i drops just a little is air compression because of cold wheather.i got the arnott rear air bags for 750+ tax. I replaced the left one yesterday in pretty cold wheather.it took me 1.5 hour to do one side.i didnt get to do the right side since it was late but ill do so today.i expect no more than an hour time,now that i know the steps and what to expect.
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Old Jan 31, 2014 | 09:52 AM
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2003 e55
I didnt get to try the first bag i installed yet.i was waiting to have both installed before.but ill let u guys kn the rezolts by this weekend hopefully. My advice if you change your own struts dont fallow arnott guide more than just a reference on small details.there guide tells you to drop the entire rear axle same as you would install the original struts.but since arnott struts eliminate the extra air rezervoirs u have in the original version, u can install each wheel separate.take off just a few bolts to allow you to play with the arm and have enough room to take them out and back in.and undo the clamp from the hose towards the air tanks.u wont need them anymore.
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Old Jan 31, 2014 | 09:55 AM
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I was wondering if you had to drop the whole sub frame as mentioned on arnotts website....glad to know you don't have to!
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Old Jan 31, 2014 | 11:18 AM
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2003 e55
U dont.is a little tight fit but u can pull it out anf band the strut a little to put it back in.the only reason for droping the frame is to avoid disconecting the hoses towards the air tanks that go above the frame.with arnott u can disconect them.the trikyest part and u have to be carefull with is disconecting the air line after u take the bag off the frame just enough to be able to play with it and rotate it a little for mor room.u dnt even have to take off the platic inside fender cover.all this are not necessary an will save you time.even if u go to a shop u can tell them all this and save money.
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Old Nov 9, 2019 | 10:18 AM
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A certain amount of suspension drop due to thermal contraction is normal and should not be regarded as a malfunction. Approximately 30 mm of suspension dropping in cold temperatures is within design parameters
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Old Nov 12, 2019 | 10:22 AM
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My car drops especially in the rear, just above the rim after sitting for days. Man it looks cool, I wish it sits like that all the time.
This has been the norm for this vehicle ever since day one. So I don't worry about it, unless the suspension has completely deflated in which case, I would definitely have an issue.
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Old Nov 12, 2019 | 11:51 AM
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See this thread regarding this issue, it has some valuable information for everyone:
https://mbworld.org/forums/new-s-cla...overnight.html
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