5316archer

I have a 2004 Mercedes CL500. The front suspension is stuck all the way up. It is very stiff. When I press the button on the inside only the rear suspension raises and lowers. The front does nothing. There are no error messages inside the dash. I already replaced the front solenoid block and the hydraulic pump. I'm not sure what to do. Does it need to be bled?? Someone please help. It's the only thing I need to drive my car. Thanks, I'd appreciate it much!