BMW X5 AUTO RIDE COMPRESSOR

Image Is Attached With Explanation And Suggestions From Car Dealerships, All The Fixes Are Worth As Much As The Car At This Point, I Need...

The Back End Of My X5 Sags, I Know This Is Due To The Air Suspension, But What I Do Not Know Is How To Test At What Level The System Has...

I Have A 2008 Bmw X5 Previous Owner Said The Back Driver Side Air Bag Is Out And It Leaned To One Side When I Got There It Was Setting...