self leveling inactive front passenger side deflated

[craigatkinson]

I have a 2006 BMW x5 4.8is with self leveling front and rear. A couple days ago I was installing an AUX input and asking questions about the install on this forum. After the install I couldn't make the AUX work so started pulling fuses, and messing around. Never did get it to work, and immediately after that ordeal my "self leveling inactive" light came on. Then I noticed that my right front air spring was completely deflated. The other sides are fully inflated. I called the dealership, but they can't get me in until Thursday.

So today I decided to disconnect the battery to see if I could reset everything. After I got the battery hooked back up, I decided to leave the spare tire out so I could turn the car on and listen for the air compressor. When I turned the car on, I got the same "self leveling inactive" light again, and when I went to the rear of the car to listen for the pump to come on, there was no sound. Its as if the pump isn't coming on at all. You would think if my front passenger side bag had a leak that the pump would run and run.

If possible I'd like to diagnose this issue myself in order to avoid taking it to the dealership and paying an arm and a leg for repairs. Can anyone help?