aTOMic

It has 145k miles and I have had the car 3 months/~4000miles or so.

I switched the suspension to Dynamic (to be lower) when we first got it, no fault codes. Last weekend I decided to try the "Standard"/"normal" (whatever is not "automatic", "Lift", or "dynamic") mode and after 2-3 days the yellow and green suspension lights came on (steady) after the amber one flashed for about 15 seconds I think.
I did not get the VCDS until I had the car a while (the first scan is under my username in test forum in case that would help). The car has never looked too low and always looks level. No unusual loads other than my fat *** (kidding, 230 lbs of pure muscle).

Drove the car (in dynamic) 5-6 times (~30 miles) since then - no dash lights yet (I'll try to scan again but have a busy day going).

So my question is, is this a co-inkydink or could there be a leak that is height-dependent? Or height sensor dependent?

Will I fry my compressor? How many times can it overheat & shut off before it's toast?

Can I plumb a 50-lb tank of liquid CO2 into the system to augment & replace the compressor??

YES I STFA AFM (All Farkin' Morning) very entertaining but may I say the search function is less than adequate? (Couldn't be my mad interweb skills!!)

Thanks,
Tom

>The codes I read (and no other info) are below:

IN: WAUML44EX4N001183 Mileage: 240450km/149408miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
02-Auto Trans -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
05-Acc/Start Auth. -- Status: Malfunction 0010
06-Seat Mem. Pass -- 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: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: Malfunction 0010
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: OK 0000
53-Parking Brake -- Status: OK 0000
55-Xenon Range -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
61-Battery Regul. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: Malfunction 0010
72-Door, Rear Right -- Status: OK 0000
75-Telematics -- Status: Malfunction 0010
76-Park Assist -- Status: Malfunction 001

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 0060
Coding: 0000002
Shop #: WSC 02353 785 00200
VCID: 24475AF8E7C0DE3

1 Fault Found:
17087 - Brake Switch (F)
P0703 - 000 - Electrical Malfunction - Intermittent
Freeze Frame:
RPM: 1024 /min
RPM: 1088 /min
RPM: 704 /min
(no units): 47.0
(no units): 21.0
Temperature: 43.0°C
T.B. Angle: 0.0°
Voltage: 13.36 V


-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 4E0-910-517.lbl
Part No SW: 4E0 910 517 A HW: 4E0 614 517 E
Component: ESP 5.7 allrad H29 0420
Coding: 0007597
Shop #: WSC 03419 000 00000
VCID: 214953ECF8D2CBB

1 Fault Found:
00526 - Brake Light Switch-F
011 - Open Circuit - Intermittent

Address 34: Level Control Labels: 4E0-910-553.lbl
Part No SW: 4E0 910 553 H HW: 4E0 907 553 F
Component: LUFTFDR.-CDC H06 4480
Coding: 0015510
Shop #: WSC 03419 444 82747
VCID: 285F4EC89BE83A3

3 Faults Found:
01772 - Signal from Level Control Pressure Sensor (G291)
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 165
Reset counter: 86
Mileage: 236648 km
Time Indication: 0
Date: 2012.03.17
Time: 16:35:15

01577 - Turn-Off due to Over-Temp
001 - Upper Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 4
Fault Frequency: 11
Reset counter: 82
Mileage: 236894 km
Time Indication: 0
Date: 2012.03.20
Time: 08:22:55

01400 - Suspension Level Control
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 2
Fault Frequency: 1
Reset counter: 86
Mileage: 240425 km
Time Indication: 0
Date: 2012.04.24
Time: 15:24:52
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: W040303250172
Coding: 0065054
Shop #: WSC 02353 785 00200
VCID: 275D4DF496F635B

Part No: 4E0 907 719
Component: Neigungssensor H02 0020

2 Faults Found:
01134 - Alarm Horn (H12)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 254
Reset counter: 46
Mileage: 148966 km
Time Indication: 0
Date: 2008.03.16
Time: 14:41:17

00526 - Brake Light Switch-F
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 82
Reset counter: 86
Mileage: 236607 km
Time Indication: 0
Date: 2012.03.17
Time: 13:01:17

mishar

For the beginning change your Brake Light Switch. It is ~$15 and not too difficult to change. Than save all those codes, delete them and wait for the fresh ones. They will better indicate what's wrong. May be nothing else. Be optimist.

ezveedub

Based off the DTC codes, your compressor is most likely taking a dump. The system shuts the pump off if the temp sensor reads too high, which usually means its running longer than it should to compensate for low air in the system or a leak.

Mister Bally

Or the #1 failure mode of the WABCO electric air compressor, one of the magnets broke free from the case of the motor causing it to run slow taking more time to fill the air struts and heating up the armature in the process.

aTOMic

After searching and thinking, I think the pressure sensor for the system (G291) is shot. It pumped up, vented, pumped, vented when I listened yesterday. Now I just need to get a new one in before it cooks the compressor. Wish me luck!

Drove on a 140 mile trip yesterday in Dynamic mode. No warning lights. Man this car is sooo nice for highway travel! Why are other cars such sheiße?? I'll try to pull codes later.
PS I've spent way too much time on here today! If anyone knows where that sensor is pls post! Paging Dr. Bently?? TIA!

Thanks all
Tom

mishar

Well done. No doctor, guru or wizard can help you online better than that.

jakematic

http://www.audi-portal.com/en/diagno...ors_17157.html

-G291 Pressure sender for adaptive suspension


- Fitting location: The pressure sender -G291 is cast into the solenoid valve block and is not accessible from the outside. The pressure sender measures the pressures of the front and rear suspension struts or the pressure accumulator (depending on the activation of the solenoid valves).

The solenoid valve block is fitted in the front left wheel housing, behind the right side liner.

aTOMic

...unless they had a Bentley manual or P/N for the G291... (googling away here)... Thanks Mishar

EDIT thanks, we posted at the same time Jake. Hope i DON'T HAVE TO REPLACE THE WHOLE (damn caps lock) assembly! Doh!

Since we don't get all the smilies here's to you

jakematic

4F0616013

http://www.ecstuning.com/Audi-D3_A8-...noid/ES390837/

about $100 cheaper here:
http://www.audiusaparts.com/parts/in...&siteid=215820

mishar

Or if you prefer