2004 Audi A8 Air Suspension help please

BostonSlaya · Nov 11, 2015

Ill start of with saying thanks for the help in advance.

I have a Audi A8 and it has been awhile sense I have posted a forum, (Guess that's a good thing)..

The problem I'm having is I was parked waiting for a car in front of me to turn and when I took off my car felt like I had a flat tire.
I pulled over and the tires are fine! I noticed right away that the front suspension was to the ground, while the back was just fine. The tires are rubbing and to close for comfort, so obviously I must have a leak? I hear the compressor turn on and the car goes up but then right back down slowly.. My question is how does one look for leak without a lift? I will use a spray bottle with soap and water but where should I start? Here is a complete Auto Scan to help..

Code:

Monday,09,November,2015,18:01:02:14758
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 15.7.1.0 (x64)
Data version: 20150904
www.Ross-Tech.com


VIN: WAUML44E74N017518   License Plate: 
Mileage: 88230km-54823mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 4E (4E0)
Scan: 01 02 03 05 07 08 09 0E 0F 15 16 17 19 25 28 34 36 37 38 42
          46 47 4F 52 53 56 61 62 72 76

VIN: WAUML44E74N017518   Mileage: 88230km-54823miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: OK 0000
0E-Media Player 1 -- Status: OK 0000
0F-Digital Radio -- Status: OK 0000
15-Airbags -- Status: Malfunction 0010
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
28-HVAC, Rear -- Status: OK 0000
34-Level Control -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: Malfunction 0010
37-Navigation -- Status: OK 0000
38-Roof Electronics -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: Malfunction 0010
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 077-910-560-BFM.lbl
   Part No SW: 4E0 910 560 A    HW: 4E0 907 560 
   Component: 4.2L V8/5V      G   0070  
   Revision: 00000000    Serial number: AUX3Z0CD531019
   Coding: 0007773
   Shop #: WSC 02313 785 00200
   VCID: 1F4DDD45CE847AC644-804A

No fault code found.
Readiness: 0010 1001

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09E-927-156.lbl
   Part No SW: 4E0 910 156 E    HW: 09E 927 156 A
   Component: AG6 09E 4,2L5V USA  0110  
   Revision: 00000001    Serial number:        0027237
   Coding: 0000002
   Shop #: WSC 02313 785 00200
   VCID: 2447D2A9E7E2591E19-8070

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 4E0-910-517.lbl
   Part No SW: 4E0 910 517 B    HW: 4E0 614 517 BC
   Component: ESP 5.7 allrad  H46 0510  
   Coding: 0007597
   Shop #: WSC 23435 000 00000
   VCID: 224BD4B1FDF6572E6B-8076

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth.        Labels: 4E0-910-131.lbl
   Part No SW: 4E0 910 131     HW: 4E0 909 131 A
   Component:     FBS AUDID3  H03 0140  
   Revision: 01403903    Serial number: AUX3Z0CD531019
   Coding: 0263168
   Shop #: WSC 02311 785 00200
   VCID: 58BFB659EB2ACDFE45-800C

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: ELV                 XXXX

No fault code found.

-------------------------------------------------------------------------------
Address 07: Control Head        Labels: 4E0-910-7xx-07.lbl
   Part No SW: 4E0 910 732 S    HW: 4E0 035 729 
   Component: Interfacebox    H43 4610  
   Revision: 00000000    Serial number: 346IP047514325
   Coding: 0000103
   Shop #: WSC 00000 000 00000
   VCID: 326B24F1AD16C7AE9B-8066

   Subsystem 1 - Part No: 4E0 910 611 
   Component: E0380 BedienteilH01 0050

   Subsystem 2 - Serial number: 00000000097794

   Subsystem 3 - Serial number: 0113.11.130000000100010015ÿ

   Subsystem 4 - Serial number: 010015ÿ

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: None
   Part No SW: 4E0 910 043     HW: 4E0 820 043 B
   Component: KLIMAAUTOMAT    016 0240  
   Revision: 00000022    Serial number: 00000000033347
   Coding: 1151313
   Shop #: WSC 02311 785 00200
   VCID: 5ABBAC519526DFEE73-800E

   Subsystem 1 - Part No: 4E0 910 772 A
   Component: Sitzluefter  FS H02  010

   Subsystem 2 - Part No: 4E0 910 772 A
   Component: Sitzluefter BFS H02  010

   Subsystem 3 - Serial number: 898053000     

   Subsystem 4 - Serial number: HO15122003065A000000000168ÿ†89

   Subsystem 5 - Serial number: 000168ÿ†898053000      000-SHO

   Subsystem 6 - Serial number:     000-SHO18122003065A00000000

   Subsystem 7 - Serial number: 65A000000000072ÿ

1 Fault Found:
00066 - Rear Right Footwell Heater (Z43) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 164
                    Mileage: 88234 km
                    Time Indication: 0
                    Date: 2015.11.09
                    Time: 17:43:27

             Freeze Frame:
                    Voltage: 11.90 V


-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 4E0-910-279.lbl
   Part No SW: 4E0 910 279 E    HW: 4E0 907 279 E
   Component: ILM Fahrer      H11 0100  
   Coding: 0111113
   Shop #: WSC 02313 785 00200
   VCID: 2A5B3C9185C68F6E23-807E

   Subsystem 1 - Part No: 4E1 910 113 
   Component: Wischer WWS D3  H30 0320  
   Coding: 00000030
   Shop #: WSC 02313  

No fault code found.

-------------------------------------------------------------------------------
Address 0E: Media Player 1        Labels: 4E0-910-111.lbl
   Part No SW: 4E0 910 111 F    HW: 4E0 035 111 
   Component: CD-Changer      H43 0470  
   Serial number: AUZ5ZBC1016260
   Shop #: WSC 00000 000 00000
   VCID: 1C37EA49DF9261DEA1-8048

No fault code found.

-------------------------------------------------------------------------------
Address 0F: Digital Radio        Labels: 4E0-910-593-SIR.lbl
   Part No SW: 4E0 910 593 D    HW: 4E0 035 593 
   Component: SDAR SIRIUS     H04 0670  
   Revision: 00000000    Serial number: AUZ4Z7E2009013
   Shop #: WSC 00000 000 00000
   VCID: 285FC6999BCABD7E35-807C

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 4E0-910-655-84.lbl
   Part No SW: 4E0 910 655 A    HW: 4E0 959 655 E
   Component: Airbag 8.4E+    H10 0920  
   Coding: 0530707
   Shop #: WSC 02313 785 00200
   VCID: 2447D2A9E7E2591E19-8070

1 Fault Found:
01220 - Rear Side Airbag Igniter; Passenger Side (N202) 
            001 - Upper Limit Exceeded - MIL ON

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 4E0-910-549.lbl
   Part No SW: 4E0 910 549     HW: 4E0 953 549 A
   Component: Lenksäulenmodul H13 0040  
   Coding: 0012241
   Shop #: WSC 02311 785 00200
   VCID: 65C18FADAC586016CE-8030

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: Lenkradmodul    H04 0080

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 4E0-910-xxx-17.lbl
   Part No SW: 4E0 910 900     HW: 4E0 920 950 B
   Component: KOMBIINSTR. VDO H44 0090  
   Revision: D15         Serial number: AUDID3CD006664
   Coding: 0000232
   Shop #: WSC 65537 000 00032
   VCID: 5CB7AA499F1221DE61-8008

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 4E0-910-468.lbl
   Part No SW: 4E0 910 468 A    HW: 4E0 907 468 C
   Component: Gateway         H07 0030  
   Revision: 07          Serial number: 0200503C0111AE
   Coding: FCFE5FCC1B2904
   Shop #: WSC 07228 444 53694
   VCID: 2643C8A191DEAB0E07-8072

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 4E0-910-131.lbl
   Part No SW: 4E0 910 131     HW: 4E0 909 131 A
   Component:     FBS AUDID3  H03 0140  
   Revision: 01403903    Serial number: AUX3Z0CD531019
   Coding: 0263168
   Shop #: WSC 02311 785 00200
   VCID: 58BFB659EB2ACDFE45-800C

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: ELV                 XXXX
   XXXXXXXXXXX ELV                 XXXX   

No fault code found.

-------------------------------------------------------------------------------
Address 28: HVAC, Rear        Labels: None
   Part No SW: 4E0 910 158     HW: 4E0 919 158 A
   Component: KLIMA-STG. FOND 015 0210  
   Revision: 00000014    Serial number: 00000000013996
   Coding: 0000000
   Shop #: WSC 00000 000 00000
   VCID: 61C99BBDB8700C3632-8034

No fault code found.

-------------------------------------------------------------------------------
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 22145 444 54027
   VCID: 2541CFADECD8A0160E-8070

2 Faults Found:
00776 - Level Control System Sensor; Left Front (G78) 
            012 - Electrical Fault in Circuit
             Freeze Frame:
                    Fault Status: 11101100
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 164
                    Mileage: 88234 km
                    Time Indication: 0
                    Date: 2015.11.09
                    Time: 17:52:25

01577 - Turn-Off due to Over-Temp 
            001 - Upper Limit Exceeded
             Freeze Frame:
                    Fault Status: 11100001
                    Fault Priority: 4
                    Fault Frequency: 2
                    Reset counter: 164
                    Mileage: 88234 km
                    Time Indication: 0
                    Date: 2015.11.09
                    Time: 17:52:40


-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   VCID: 55A1BF6DBC38F0965E-FFFE

No Faults Found
  or DTCs not supported by controller
  or a communication error occurred

-------------------------------------------------------------------------------
Address 37: Navigation        Labels: 4E0-910-88x-37.lbl
   Part No SW: 4E0 910 888 M    HW: 4E0 919 887 C
   Component: MNS US          H42 1100  
   Revision: 00000000    Serial number: 355LL037514310
   Shop #: WSC 02313 785 00200
   VCID: 387F16D94B6A2DFEA5-806C

No fault code found.

-------------------------------------------------------------------------------
Address 38: Roof Electronics        Labels: 4E0-910-135.lbl
   Part No SW: 4E0 910 135 A    HW: 4E0 907 135 
   Component: Dachknoten D3   H01 0090  
   Serial number: 00000332500063
   Coding: 0004021
   Shop #: WSC 02313 785 00200
   VCID: 1D31E74DC48868D656-8048

1 Fault Found:
02138 - Control Circuit for Front Right Interior Lights 
            012 - Electrical Fault in Circuit
             Freeze Frame:
                    Fault Status: 01101100
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 164
                    Mileage: 88232 km
                    Time Indication: 0
                    Date: 2015.11.09
                    Time: 17:56:00


-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels: 4E1-910-802-42.lbl
   Part No SW: 4E1 910 802     HW: 4E1 959 801 
   Component: Türsteuer.FS BRM005 0110  
   Coding: 0042525
   Shop #: WSC 02311 785 00200
   VCID: 5EB3A041890E33CE0F-800A

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 4E0-910-289.lbl
   Part No SW: 4E0 910 289 A    HW: 4E0 907 289 
   Component: Komfortgeraet   H03 0030  
   Revision: 00300003    Serial number:  W040312110112
   Coding: 0065150
   Shop #: WSC 02313 785 00200
   VCID: 275DC5A596D4B2063C-8072

   Subsystem 1 - Part No: 4E0 910 853 
   Component: Heckdeckel      H06 0060

   Subsystem 2 - Part No: 4E0 907 719 
   Component: Neigungssensor  H02 0020

1 Fault Found:
01504 - Bulb for License-Plate Light (X) 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 3
                    Fault Frequency: 254
                    Reset counter: 164
                    Mileage: 193858 km
                    Time Indication: 0
                    Date: 2011.08.15
                    Time: 01:50:33


-------------------------------------------------------------------------------
Address 47: Sound System        Labels: None
   Part No SW: 4E0 910 224 C    HW: 4E0 035 223 B
   Component: DSP-High D3/AUX H13 0470  
   Revision: Dev_D01     Serial number: 00000000655399
   Coding: 0000016
   Shop #: WSC 40273 001 1048576
   VCID: 1E33E041C98E73CE4F-804A

No fault code found.

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II        Labels: None
   Part No SW: 4E0 910 280 A    HW: 4E0 907 280 A
   Component: ILM Beifahrer   H08 0020  
   Revision:             Serial number: 00000000030051
   Coding: 0010111
   Shop #: WSC 02313 785 00200
   VCID: 1E33E041C98E73CE4F-804A

   Subsystem 1 - Part No: 4E0 910 511 A
   Component: UGDO HL US      H02 0030

   Subsystem 2 - Serial number: VK4978T078WE  

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels: 4E1-910-802-52.lbl
   Part No SW: 4E1 910 802     HW: 4E1 959 802 
   Component: Türsteuer.BF BRM005 0110  
   Coding: 0042525
   Shop #: WSC 02311 785 00200
   VCID: 5EB3A041890E33CE0F-800A

2 Faults Found:
01482 - Motors for Central Locking 
            006 - Short to Plus - Intermittent
             Freeze Frame:
                    Fault Status: 00100110
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 182
                    Mileage: 87152 km
                    Time Indication: 0
                    Date: 2015.10.25
                    Time: 08:32:12

02115 - Locking Unit for Central Locking 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 14
                    Reset counter: 204
                    Mileage: 88224 km
                    Time Indication: 0
                    Date: 2015.11.09
                    Time: 16:48:52


-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 4E0-910-801.clb
   Part No SW: 4E0 910 801 A    HW: 4E0 907 801 
   Component: EPB  AV1C1010   H01 1010  
   Revision: AV1C1010    
   Coding: 0000532
   Shop #: WSC 23435 444 58960
   VCID: 1D31E74DC48868D656-8048

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 4E0-910-541.lbl
   Part No SW: 4E0 910 541 T    HW: 4E0 035 541 
   Component: TUNER EU/US/RDW H41 0630  
   Revision: 00000000    Serial number: 304CE047583230
   Coding: 0000002
   Shop #: WSC 06802 176 59446
   VCID: 31692BFDA810FCB6E2-8064

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul.        Labels: 4E0-910-181.lbl
   Part No SW: 4E0 910 181 A    HW: 4E0 915 181 
   Component: ENERGIEMANAGER  H02 0230  
   Revision: 00000000    Serial number: 00000004980755
   Shop #: WSC 07212 444 82777
   VCID: 1E33E041C98E73CE4F-804A

   Subsystem 1 - Part No: 000 915 105 DL
   Component: von VA0  310314E04K       
   Coding: 303030393135313035444C5641303331303331344530344B
   Shop #: WSC 07212 444 82777

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels: 4E0-910-802.lbl
   Part No SW: 4E0 910 802 A    HW: 4E0 959 801 C
   Component: Türsteuer.HL BRM003 0100  
   Coding: 0000013
   Shop #: WSC 02313 785 00200
   VCID: 1E33E041C98E73CE4F-804A

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels: 4E0-910-802.lbl
   Part No SW: 4E0 910 802     HW: 4E0 959 802 A
   Component: Türsteuer.HR BRM005 0110  
   Coding: 0000013
   Shop #: WSC 02311 785 00200
   VCID: 5DB1A74D840828D616-8008

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: 4E0-910-283.lbl
   Part No SW: 4E0 910 283 A    HW: 4E0 919 283 B
   Component: Parkhilfe 8-Kan H11 0010  
   Revision: --.--.--    Serial number: 00000335600021
   Coding: 0001208
   Shop #: WSC 02313 785 00200
   VCID: 2149DBBDF8F04C3672-8074

No fault code found.

End-------------------------(Elapsed Time: 03:18)--------------------------

Jef · Nov 11, 2015

Thank you for posting an Auto-Scan without having to beat it out of you.

Address 34: Level Control said:
2 Faults Found:
00776 - Level Control System Sensor; Left Front (G78)
012 - Electrical Fault in Circuit

01577 - Turn-Off due to Over-Temp
001 - Upper Limit Exceeded

Looks like we have two issues here. The 00776 code for the G78 sensor, unplug the sensor and take a look. Is there rot at the electrical connector?

Rule of thumb, 01577 tends to be a leak, the pump has to run all the time to try and keep the system aired up. But the pump isn't made to run all the time, it will get too hot if it doesn't get to rest, so the Level Control Module will shut it down when it starts to overheat. I'm kind of thinking you've got a classic case of blown bags.

You may find this post helpful for testing.

BostonSlaya · Nov 11, 2015

Jef, thanks for the reply!! I will first start off with the sensor is free of anything I know it needed to be replaced because I couldn't do basic learning to the headlights, because of this i just coded the can-gateway saying I didn't have the headlights so I didn't get the annoying sound.
So how can I tell what bag is the problem? Do I have to replace the whole thing? Can they be rebuilt? What's the cheapest route?
Thanks.

BostonSlaya · Nov 11, 2015

I also got a new scan that finally shows a leak has been detected ,I didn't want to throw up another scan without knowing how to put it into a scrolling box lol. Any guidance? I forgot it's been to long.

BostonSlaya · Nov 11, 2015

The 00776 code for the G78 sensor, unplug the sensor and take a look. Is there rot at the electrical connector?

This is how she's looking, stinks I want to drive her to work but tires are dragging.

This is the sensor correct??

Part#4e0-941-285-g

delboy · Nov 12, 2015

Think its the other 14 in the image but regardless its 4E0-941-285-G

BostonSlaya · Nov 12, 2015

delboy said:
Think its the other 14 in the image but regardless its 4E0-941-285-G

Yes you are correct it is the other 14 lol. Thanks

stevenpierce83 · Nov 12, 2015

i ran into a problem with that style sensor before for the auto leveling headlights if it show 0.02 for a return voltage then it has failed. unhook the arm and move it up and down while looking at live data if it doesnt change i would suspect failure on the level sensor. what i did to check was i sent a 2 volts up the return wire while looking at live data to see if it displays that voltage and it did which then shows all other parts of the system is operable. hope this helps. and another test i did was i sent 5 volts to the sensor and ground then measured the return voltage while moving the arm thats the bench test. good luck

BostonSlaya · Nov 13, 2015

stevenpierce83 said:
i ran into a problem with that style sensor before for the auto leveling headlights if it show 0.02 for a return voltage then it has failed. unhook the arm and move it up and down while looking at live data if it doesnt change i would suspect failure on the level sensor. what i did to check was i sent a 2 volts up the return wire while looking at live data to see if it displays that voltage and it did which then shows all other parts of the system is operable. hope this helps. and another test i did was i sent 5 volts to the sensor and ground then measured the return voltage while moving the arm thats the bench test. good luck

Thanks Steven, I will tell you it worked until for awhile I was leaking coolant and didn't know it. I had a leak from my coolant reservoir and it leak into the sensor the whole time. I haven't checked what you stated because well I just didn't lol. I was paying close attention to my air leak. Any thought on this?

I sprayed both sides with soap and water and the driver side is white. It was worse until I cleaned it up. Is that part in the strut a part that can be replaced? Or sealed? Thanks.

BostonSlaya · Nov 14, 2015

Jef said:
Thank you for posting an Auto-Scan without having to beat it out of you.

Looks like we have two issues here. The 00776 code for the G78 sensor, unplug the sensor and take a look. Is there rot at the electrical connector?

Rule of thumb, 01577 tends to be a leak, the pump has to run all the time to try and keep the system aired up. But the pump isn't made to run all the time, it will get too hot if it doesn't get to rest, so the Level Control Module will shut it down when it starts to overheat. I'm kind of thinking you've got a classic case of blown bags.

You may find this post helpful for testing.

Hi jef, thanks for you help. I sprayed both struts and let it settle and noticed on my driver side there was white at the top of the strut where the air line goes into.

Is this part able to be replaced or sealed? This would be better than dropping the money right now for a new strut. Thanks so much for the help.

Lgibson · Nov 17, 2015

Air suspension Touareg owners in the snow belt also run into this issue. Some are able to buy a few more seasons by r&ring the fitting. But it is probably electrolytic corrosion on the aluminum threads of the strut. Perhaps clean up threads and JB Weld or try a helicoil? The socket is T 0158/1. Audi will just sell you a new strut.

BostonSlaya · Nov 17, 2015

Lgibson said:
Air suspension Touareg owners in the snow belt also run into this issue. Some are able to buy a few more seasons by r&ring the fitting. But it is probably electrolytic corrosion on the aluminum threads of the strut. Perhaps clean up threads and JB Weld or try a helicoil? The socket is T 0158/1. Audi will just sell you a new strut.

Thanks for the info I took the red line out and made sure it wasn't leaking, it wasn't. I ended up buying some JB weld and applied it around the area. As I tried to test it the motor turns on but doesn't life the front end at all now. It did before but it would just drop down, now it doesn't move up at all on both ends. I tried to do an adaption in 34 and it won't pass ch1 without a error. There are no new DTCs so nothing more to post but any ideas? I'm thinking maybe the motor needs a rebuild so I ordered a new piston ring and seal. Any thoughts?

delboy · Nov 17, 2015

Have you tried this?

I would jack the car up to support it at a normal ride height and try charging the front axle.

http://forums.ross-tech.com/showthread.php?1996-Level-Control-Bleeding-Charging

BostonSlaya · Nov 17, 2015

delboy said:
Have you tried this?

I would jack the car up to support it at a normal ride height and try charging the front axle.

http://forums.ross-tech.com/showthread.php?1996-Level-Control-Bleeding-Charging

Delboy thanks for teaching me something new!!
So I bleed the system as stated, I then tried to fill and it kept saying ABORTED instead of done. I did try this without it being jacked up because it's hard to jack it up as low as it is. I will try again though, other thing is how much should I let it charge to? Looks like if i run it again the pressure goes up more. This procedure lifted the back up fine just not the front. Thanks for the help.

delboy · Nov 17, 2015

BostonSlaya said:
Delboy thanks for teaching me something new!!
So I bleed the system as stated, I then tried to fill and it kept saying ABORTED instead of done. I did try this without it being jacked up because it's hard to jack it up as low as it is. I will try again though, other thing is how much should I let it charge to? Looks like if i run it again the pressure goes up more. This procedure lifted the back up fine just not the front. Thanks for the help.

Front axle pressure max is 9.5 bar and 6.5 bar on rear axle. the process activates as you know once you click the button but it times out after 60secs, if you need more just do it again.

Obviously if you have a leak or some other issue you may never get it up, don't keep trying because you may overheat the compressor, just try up to the max pressure as witnessed in block 4

BostonSlaya · Nov 17, 2015

Ok so I jacked the car up to around normal drive height. I did all steps provided above and I got passed the aborted part. I can get a max of 4.88 bars for pressure in the front axel. So of corse I'm thinking maybe the compressor is to weak to lift it?? I was thinking that but of corse the back lifts perfectly so that shouldn't be the problem right??? I'm lost on why it won't lift when it used to.

delboy · Nov 17, 2015

BostonSlaya said:
Ok so I jacked the car up to around normal drive height. I did all steps provided above and I got passed the aborted part. I can get a max of 4.88 bars for pressure in the front axel. So of corse I'm thinking maybe the compressor is to weak to lift it?? I was thinking that but of corse the back lifts perfectly so that shouldn't be the problem right??? I'm lost on why it won't lift when it used to.

The fact that the rear axel has a max pressure of 6.5 tells me that it requires less to lift the weight of the rear which makes sense as the cars are front heavy.

Let the compressor have a break for a while and if the temp is sensible run the accumulator charging test, that will only charge the accumulator and not the struts, when I ran the test on mine I quit at 15.5 bar the max of the system is 16 bar so at the very least you would like to see 9.5 bar doing that test. if its less then you will need to rebuild the compressor.

BostonSlaya · Nov 17, 2015

delboy said:
The fact that the rear axel has a max pressure of 6.5 tells me that it requires less to lift the weight of the rear which makes sense as the cars are front heavy.

Let the compressor have a break for a while and if the temp is sensible run the accumulator charging test, that will only charge the accumulator and not the struts, when I ran the test on mine I quit at 15.5 bar the max of the system is 16 bar so at the very least you would like to see 9.5 bar doing that test. if its less then you will need to rebuild the compressor.

This might help but here is a video i posted on YouTube. I did it with the car running, but also with the car off and battery charger connected. Here is the link to the video.
https://m.youtube.com/watch?v=KHmh5Lf2QD8

Let me know if I'm missing something, thanks so much.

Jack@European_Parts · Nov 17, 2015

Compressor maybe weak or manifold could be dirty.........or slight leak.

Taking the distribution switch manifold off to clean and lite lube helps a lot.

Inspect with soapy water to check for leaks or foaming class cleaner.

FYI for compressors that are dead or weak and to expensive for some.

You can modify with the "all metal" air pump from harbor freight, and retrofit it in with temp sensor and your own air filter.

http://www.harborfreight.com/catalogsearch/result/?q=96068

delboy · Nov 17, 2015

The accumulator test shows your comp is at least capable of 9 bar and you can't get more than 4.88 in the front axle so you do indeed to start tracing why, the valve block is up in the rear part of the drivers side wheel arch near the bulkhead, check the lines there with foaming leak check like Jack says and also the struts, if nothing obvious the you need to isolate the struts individually to try and eliminate the bad from the good.

This thread is great info and cheap to do
http://forums.ross-tech.com/showthr...nsion-leak-testing-may-have-a-new-method-here

2004 Audi A8 Air Suspension help please

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