4.8 X5 dropped 2" inches overnight air ride is leaking somewhere?

[Jim M3]

I just got my X5 and have been patiently waiting to get my title and warranty information from an out of state purchase. This morning I go outside and the truck is sitting very low in the back end, obviously an air ride suspension issue while it is sitting.

I called the dealer and they said problems with this have been very rare, I did a search but didn't come up with anything. Since both sides are low I am guessing it has to be an air leak at a valve or something hard to believe both airbags would spring leaks at the same time.

Input is appreciated, I have to wait to take it in until I get the warranty transferred.