Originally Posted by GetafiX

Quick update..... over the weekend, as a test, I connected a little portable compressor (like those used for the tyres) and plugged it into the inlet to “help” the onboard compressor. Worked like a charm. Picked up from level 1 to level 3 in less than a minute. External compressor never exceeded 0.5bar but it does tell me the onboard compressor is stuffed.

BTW: I have some schematics and descriptions that I pulled off the WABCO site if anyone is interested (still have not foundthe specs of the Allroad system). What are the forum rules about posting these, and if OK how do I go about it?

Originally Posted by parkinman

Yesterday, after work, I walked out to my 05 allroad and the entire front of the car was all the way down resting on the bumper stops. The back, however, was at the normal level 3 setting. After a few curse words, I started the car and got the car to raise back up to level 3 (it didn't take an inordinate amount of time). On my 20 mile ride home (all highway) the front end slowly sank down to level one with the air suspension warning light coming on just briefly. Got the car home safely and raised the car back up to level 3 and expected it to drop back down over night. Well, it didn't. As of 8am this morning still sitting level on level 3. I've had a few glitches with the air suspension from time to time where it wouldn't raise back up to level 3 when dropping below 50mph or it going to level 1 on its own but I could manually get it to back to the normal setting with no more problems. This is the first time I've had it go all the way down. This car has 63K on it and was always properly maintained and lived its entire live in North Carolina. It still has all the original parts though. I'm afraid of some big looming problem coming. I don't know if this has been posted somewhere else but any help/ideas would be greatly appreciated.