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

W211 E55 MY 2005 - Rear Airmatic question...

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Old Jun 3, 2022 | 10:54 AM
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2005 E55, 2002 CLK55, 2005 SLK350 also a 2009 BMW 335-IX
W211 E55 MY 2005 - Rear Airmatic question...

My E55 sits very slightly lower at the left rear position (wheel well). I am talking about left to right, as viewed from the rear.

When I measure the body ride height it shows about 3/4 " lower at the left rear wheel well than it does at the right.

The front of the car is level from left to right.

This rear difference exists no matter the suspension setting (comfort - 1 - 2) or the vehicle rising setting.

The Airmatic system does not lose pressure (sink) over time (weeks) so I do not think there is a leak anywhere or a bad air unit.

Are there calibrations for this left to right slant?

Or is there a sensor that controls this?

Thanks.

HEO

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Old Jun 3, 2022 | 10:58 AM
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2015 Challenger Hellcat, 2023 Ram 3500, 2005 E55 Wagon, 2019 GLC63s
Do you have lowering links installed?

R.K.
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Old Jun 4, 2022 | 10:09 AM
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2005 E55, 2002 CLK55, 2005 SLK350 also a 2009 BMW 335-IX
No mods...

No modifications on the suspension.
The car does have 19" AMG two-piece wheels.
And it only has 30K miles after all these years.

Last edited by HighEndOne; Jun 4, 2022 at 10:10 AM. Reason: Added information.
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Old Jun 4, 2022 | 11:04 AM
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2005 E55 AMG
Wow 30k miles. Incredible. Very nice.
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Old Jun 4, 2022 | 11:34 PM
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2005 E55 AMG
Did you buy the car new?
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Old Jun 5, 2022 | 11:10 AM
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2005 E55, 2002 CLK55, 2005 SLK350 also a 2009 BMW 335-IX
It was about 18 months old when I got it. It had 5K miles on it at that time.
The original owner bought a CLK 63 Black Series to replace it.
I got to see that CLK. Awesome car in black. WOW.

Last edited by HighEndOne; Jun 5, 2022 at 11:11 AM. Reason: Correction
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Old Jun 5, 2022 | 07:02 PM
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I believe the E55 only has 1 height sensor as the back, just as my CLS55.

Maybe a worn shock on the sagging side?
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Old Jun 6, 2022 | 12:13 AM
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2005 E55 AMG
Originally Posted by HighEndOne
It was about 18 months old when I got it. It had 5K miles on it at that time.
The original owner bought a CLK 63 Black Series to replace it.
I got to see that CLK. Awesome car in black. WOW.
That is cool!
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Old Jun 6, 2022 | 08:56 PM
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Originally Posted by nd-photo.nl
I believe the E55 only has 1 height sensor as the back, just as my CLS55.
You are correct. L/R sensors in the front and one center sensor in the rear. Same with W211 wagons.

Originally Posted by nd-photo.nl
Maybe a worn shock on the sagging side?
This would be my guess, too. It's time, even for well-maintained cars.

I have a 2003 and the original rear bags were still going strong until last winter, when after sitting for maybe 4 days, you can see it start to droop. Some people would be OK with it for a while, but I went ahead and switched them out for Arnott units.
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Old Jun 7, 2022 | 06:19 AM
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They are also in my planning. Just did the rear bags and the compressor. The rear shocks arent that expensive (the fronts are!) and will be replaced in the near future (185k kms / 115k miles on my clock)


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Old Jun 7, 2022 | 02:19 PM
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Yes, that could be it. The shocks are original.
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Old Jun 7, 2022 | 02:22 PM
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2005 E55, 2002 CLK55, 2005 SLK350 also a 2009 BMW 335-IX
I am going to go into that LR wheel well and check the sensor and the shock for leakage.
Since the air bag stays inflated (actually ALL the bags F and R) I am hoping that those are OK.
The car was aligned when I got now tires and it in on spec.
Perhaps I bent something along the way? (pothole)
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Old Jun 9, 2022 | 01:28 PM
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Could also be, but a proper alignment shop would've noticed that straightaway.

I was just thinking that maybe the valve block could also play a role (one shock receiving more air than the other)?
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Old Jun 9, 2022 | 03:36 PM
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2006 CLS55 AMG, 2005 SLK 350 AMG
Originally Posted by nd-photo.nl
Could also be, but a proper alignment shop would've noticed that straightaway.

I was just thinking that maybe the valve block could also play a role (one shock receiving more air than the other)?
Single air line goes from the compressor to the rear of the car where it splits to individual lines to the air springs. So you won't find an issue with an individual rear air spring at the valve block, but possibly at the split at the back of the car.
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Old Jun 9, 2022 | 04:57 PM
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Thanks for all the tip Gents!

When I get to the bottom of this I will post the root cause and the repair information.

All the best... HEO

"Drive it like you stole it"
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Old Jun 10, 2022 | 02:06 PM
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Originally Posted by machild
Single air line goes from the compressor to the rear of the car where it splits to individual lines to the air springs. So you won't find an issue with an individual rear air spring at the valve block, but possibly at the split at the back of the car.
Ah yes, I totally forgot about that one. Its behind the rear differential (at least on my CLS)
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Old Jun 11, 2022 | 08:10 AM
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It's the same on the W211 E63's. Typically, the airline doesn't go bad, unless their rubbing up against something overtime, which causes a leak.
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