I would've followed up my own question with this one, but it doesn't look like that is allowed. I see where someone else had some wacky air suspension problems and so do I, where I hear the air pump in the back come on sometimes, I can't seem to raise the car. Sometimes it looks like it tries and then it doesn't work. Sometimes the dash light comes on without me touching a button. Not sure if the car is even level. Although I'm considering eventually having a conversion kit installed, I have 2 questions for now. 1. With the cost of gas going up again, I was wondering if the pump causes significant fuel usage when it keeps turning. 2. In looking at the manual, I can see that the air suspension is on 2 separate fuses, with a few other things. The second fuse that it's on is for the navigation system (which I don't have) and automatic headlight adjustment (which is also resides on another fuse in addition to this one). Would it be a bad idea to just pull the fuse to stop this thing from going nuts? The other fuse that the air suspension is on, I just wouldn't touch, as there are waaay too many things on that fuse line.
Air Suspension Disconnection on 2004 Audi Allroad Quattro
by Sienna02 in East Brunswick, NJ on February 20, 2012
ANSWER by patrick mannion on February 20, 2012
Engine or electrical demand isn't going to be noticeably reflected in gas mileage.I don't know much about your Audi but there are aftermarket Bilstien shock/spring conversion kits for fancy Range Rover and Jaguar suspensions that fail. May be best to post your question on an Audi specific forum.
ANSWER by utahimports on June 28, 2015
Your pump is worn and you can order a rebuild kit on eBay from LandyAir in the UK. You do not have to remove the pump assembly just the cylinder portion. The pump runs trying to build enough pressure until it over heats and shuts off. The head lamps use the level sensors in the air suspension to adjust the level of the head lamps.