allenst

model:
2004 A8L approx. 160,000Km

A little background before posting error codes.
Apatptive Air greyed out on 'lift' and 'dynamic'.
stiff rough ride--car low low to ground.
VCDS done. 3 faults at Address 34.
could here pump working then shutting off.
obviouslt the "LEAK" is causing all this.
coming from front left wheel is my suspicion as problems of 'list' started there.

QUESTION: "How to pin-point the leak ?"

Address 34: Level Control Labels: 4E0-910-553.lbl
Part No SW: 4E0 910 553 E HW: 4E0 907 553 E
Component: LUFTFDR.-CDC H05 4290
Coding: 0015510
Shop #: WSC 93250 999 80931
VCID: 2541D66CECA1F036C8B-8070

3 Faults Found:
01577 - Turn-Off due to Over-Temp
001 - Upper Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 4
Fault Frequency: 30
Reset counter: 37
Mileage: 159683 km
Time Indication: 0
Date: 2004.04.06
Time: 18:19:59

01583 - Leak in System Detected
000 - -
Freeze Frame:
Fault Status: 11100000
Fault Priority: 3
Fault Frequency: 237
Reset counter: 11
Mileage: 154942 km
Time Indication: 0
Date: 2004.02.23
Time: 20:31:51

01400 - Suspension Level Control
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 2
Fault Frequency: 249
Reset counter: 51
Mileage: 161914 km
Time Indication: 0
Date: 2004.05.13
Time: 16:50:30

silverd2

Wrong Forum...wrong year...no factory air suspension on D2's.

Try here >>

A8 / S8 (D3 Platform) Discussion - AudiWorld Forums

mik15

well...not sure how accurate is the phrase that A8 D2 has no air suspension...i have just bought one and it does have a rear axle air suspension, at least that's what it says after decoding the VIN number on Audi's official website.

Haven't yet physically checked under the car, but i guess they can't be wrong...

Federung/Daempfung,Niveauregelanlage, selbstregulierende Luftfederung an HA

silverd2

If you have a 2003 or later outside of North America, it's not a D2....it's a D3 (air springs), introduced one year earlier outside NA.

If you have a non-North America D2 (96-02), you may have the self-leveling option, which involves the rear shocks only...and they are not air springs like D3's...they are height adjusting shocks only, by means of hydraulic (oil) accumulators mounted to the tops of the rear shocks only, to adjust car level for varied rear seat and trunk loads. The hydraulic pressure to the accumulators is fed from a belt driven pump on the engine, just like a power steering pump.

Red arrows for non-NA self-level option. Blue arrow for NA rear shocks on D2's >>>

mik15

mine is a 2001 A8 D2 4.2 quattro, and yes it does have the leveling suspension.

Thanks very much for the info, now it makes more sense, as i saw some fluid on the right shock and couldn't really understand where from if it was air.... i guess it is leaking.

Is this system fed by the same reservoir for power steering? that would make sense as i did find in the trunk some ATF oil, so the owner knew about the leak but did't say a thing ...do you have any p/n for the shocks?

Thank you very much for enlightening me and i'd appreciate your help

silverd2

Your car should have a "tandem" pump (in the normal place) that doubles as power steering & rear suspension pump. Both work off the same power steering fluid reservoir...NOT ATF fluid (Audi say DO NOT USE ATF), though...it should use high grade ("G002 000" or "G002 012") power steering fluid.

I'm miles away from my computer with the ETKA catalog, so will post part numbers for you later.

silverd2

Here ya go >>

ratbag

My self levelling rear is also leaking.
What is the cure. Replacing seals etc. Replace the complete shock assembly.
Can standard shocks be fitted.
Thanks, from New Zealand