A8 / S8 (D3 Platform) Discussion Discussion forum for the D3 Audi A8 produced from 2003-2010 and Audi S8 produced from 2006-2010

Air damper height failure

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Old Jun 4, 2024 | 09:11 AM
  #1  
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Default Air damper height failure

Hi guys, I have a strange problem that I can't solve myself, I don't know how.

This is a defect in the air shock absorber in the driver's passenger seat. The point is that one side is 2 cm lower than it should be. The mosses hold their position and do not fall.

It doesn't matter what mode the car is in, Dynamic or Lift, one side is still 2 cm lower.



We changed
- full air damper
- chassis control unit
- calibration via vcds
- vehicle height adjuster

Car was fine for about a week, now still having the same problem

Thank you very much!
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Old Jun 4, 2024 | 10:19 AM
  #2  
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Recheck the suspension height sensor for that corner. Look at wiring harness for that wheel too. (Given work to date, maybe especially the harness idea)

Rerun scan and make sure the calibration actually stuck.

If you used a rebuilt strut, failure rate is high anywhere from immediate to a year or two later (maybe as much as 50% from D3 posts over years).

Make sure you didn't use a sport or S8 spec strut--lower ride heights by design.
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Old Jun 19, 2024 | 06:42 AM
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Default air suspension

Originally Posted by Kolo23
Hi guys, I have a strange problem that I can't solve myself, I don't know how.

This is a defect in the air shock absorber in the driver's passenger seat. The point is that one side is 2 cm lower than it should be. The mosses hold their position and do not fall.

It doesn't matter what mode the car is in, Dynamic or Lift, one side is still 2 cm lower.



We changed
- full air damper
- chassis control unit
- calibration via vcds
- vehicle height adjuster

Car was fine for about a week, now still having the same problem

Thank you very much!

Your air suspension bags are torn. The cost of rear dampers is $1500 per corner. You may need two at a time. The life span of bags is 120K miles.
Best option is coilovers. They cost about $1500 for 4. Installation is $ 1200.00
https://d2bdmotorwerks.com/i-2389596...ttro-d34e.html

I set ride height 5.5 inches front and 5.9 inches rear. Ride is comfortable but corners well.

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Old Jun 19, 2024 | 08:27 AM
  #4  
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Originally Posted by docnaro
Your air suspension bags are torn. The cost of rear dampers is $1500 per corner. You may need two at a time. The life span of bags is 120K miles.
Best option is coilovers. They cost about $1500 for 4. Installation is $ 1200.00
https://d2bdmotorwerks.com/i-2389596...ttro-d34e.html

I set ride height 5.5 inches front and 5.9 inches rear. Ride is comfortable but corners well.
That is not what’s wrong, and a coilover conversion is not the answer.


As mentioned, a consistent 20mm lower ride height on that corner, despite everything else seemingly functioning normally does point to a ‘Sport’ strut being installed, which are 20mm shorter.
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Old Jun 19, 2024 | 01:40 PM
  #5  
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Exactly, I have a completely different problem that I don't understand, otherwise my chassis works great
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