E39 touring automatic air suspension problem

Hi, I'm very very new to this forum, but I have a problem with my e39. Basically, I was driving home and I stopped somewhere for some time. Basically, when I started driving again, the car felt very bumpy and so on, and when I got out, the back of the vehicle was lifted all the way up. Some minutes later it threw me out that air suspension control is not working. From that day the rear of the car is just lifted up, and when it's turned on it pumps the air all the way up, and then stops pumping when it's max height.