My friend got a 2003 Audi Allroad and recently replaced the air shock.
His symptom is the air shock light will suddenly show blinking while driving. The light has four levels. Usually he drove at 2nd level (from bottom to top). However, I experienced one time I saw the (L1 & L2 & L3) blinking together. And, the compressor is pumping. Sometime, he parked the car, he found it lower to touch the ground at next day. But, he did replace the air shock. Now, he is trying to put on L4 every time parking. Most scary is the compressor pumping while driving. It could lower down to the ground and get damaged.
Is anyone familiar with the situation or knowing how to fix?
Air suspension: 2003 allroad Audi --- Urgent , please help --- on 2003 Audi Allroad Quattro
The air suspension system will automatically lower the ride level based on speed. Level 4 to 3 at 20 mph, level 3 to 2 at ~50 mph, level 2 to level 1 at 80 mph for more than ~90 seconds.
It is normal for the compressor to come on many times during driving especially if you are in stop and go traffic or lots of lights -- the air suspension system re-levels every time the allroad comes to a sustained stop, and will also reset to the level the ride was set to at startup -- except level 4 which must always be manually entered.
The compressor will also run frequently if you drive very spiritedly with lots of hard cornering or body roll maneuvers -- the ride adjustment system adds and releases air from the suspension to maintain proper stability. This depletes the reservior and necessitates compressor running.
If the compressor runs all the time and the ride remains low, it is likely the new air shock was improperly installed, or another shock is leaking. Then again, sometimes if you turn off the car before it is finished self leveling -- an air valve can remain open an bleed all the air from a shock. I drive an allroad.
ill let you know how it works out on here!