Air Suspension Ghost: 2005 X5 4.8is...

[RedsoX5]

Ok so got the TiAg 4.8is. Have not had a careful evaluation yet by my Indy though they did do a quick PPI last week. Self-level Suspension Inactive error is continuously on, all sensors and modules have been replaced recently by BMW and another Indy. They say they can't fix the problem.

Adjustment button stays in middle position. Truck runs fine and stays in apparently the mid level position all last week while I drive it. Today, though it is sitting and is COLD outside like 34 degrees F. I go out and it is DOWN in the front only, both sides and about 3/4" above tires. Open up door nothing happens. Start truck and nothing happens. DRIVE about a quarter mile and stop, get out and level is MID level again! Seems perfect and equal on both sides. Had to drive it though to "fix" itself.

I know this is probably a common issue and there are likely many discussions on this I just couldn't readily find any on this case.

I am sure this is probably gonna eventually warrant a redo to coils but if the sensors are ok, the module is ok, compressor ok and the air bags ok (they felt fine, had no apparent leaks) then where could the 'ghost" LIVE?

Thanks for any suggestions!