the x5 off /what can it be ? hi my x5 has the suspension problem i dont understand, if i open any door or just hit the key control to open the x5 . i would hear a moter sound comeing from the rear and the suspension would go up ,and stay up aslong their is something on or iam driving .but as soon i trune every thing off the x5 would go back down ,from the rear passinger side only.before i go to a teck i would like to know if this has happen to anybody ,or have a idea if is a sencer or a leak but from wear? thank you . fred