Replaced air compressor and relay and now the car will not go down. I have all options in the MMI but the only one that responds is the lift mode. Did a scan and the only fault is
Friday,26,July,2013,15:49:08:04768
VCDS Version: Release 11.11.6 (x64)
Data version: 20121223


Address 34: Level Control Labels: 4E0-910-553.lbl
Control Module Part Number: 4E0 910 553 H HW: 4E0 907 553 F
Component and/or Version: LUFTFDR.-CDC H06 4480
Software Coding: 0015510
Work Shop Code: WSC 02313 785 00200
VCID: 285F13559BE1BB5848B
1 Fault Found:

01770 - Temperature Sensor for Level Control Pump/Compressor (G290)
007 - Short to Ground
Freeze Frame:
Fault Status: 11100111
Fault Priority: 4
Fault Frequency: 1
Reset counter: 15
Mileage: 193315 km
Time Indication: 0
Date: 2013.07.26
Time: 15:42:06

Need help.

 

I am not mechanic but you stated you replaced the compressor and the fault code shows 007 - Short to Ground, I would start there.