Self leveling air suspension???
 

BMW leveled the truck said they did a pressure test for leaks and said all was fine. Yet, it still leans to the driver side when parked for a while. When I start it up the front jumps up but still not as high as the passenger side. Does anyone have any ideas on this problem? Please help!

there is a leak.

You're right. Leaky air bag! Thousand bucks

get rebuilt from arnott half the price