[bestinhouse]

I haaaate intermittant problems.

Mine hops - then doesn't - "sits down" then doesn't intermittant

My 2013 bmw X5 35i xdrive will sometimes deflate or "sit down" all the way on both sides of the rear axel when parked on flat ground. When parked nose down, or on an angle, the car sometimes does not deflate or "sit down" at all.

When on the freeway it will sometimes drive wonderfully - other times it will HOP as it travels, and even HOP as it is backed down the driveway (a 40 yard downhill drive).

I am assuming I have one bad air bag- and that is why it hops. One deflates while the other doesn't - While I drive I hear the pump trying to inflate about once a minute.

But then why do both bags deflate when it is parked with the engine off.

Help me Obi-Wan! You are my only hope!