The system should self-bleed with the correct amount of fluid in the reservoir.However you may have to manually open and close the roof to get the system started.On the pump unit you will find a tap,open this up to release the pressure in the system.Start to fold the the rear section up and release the decklid.Take a look in the rear of the boot,near the ski hatch,and there is a release cord.Pull down to release the decklid and fold to roof into the rear cavity.Make sure the manual decklid release is returned to the original position .Close the tap on the pump and with a bit of luck the roof should work.May be a good idea to lube all the pivot points on the mechanism.Also don't forget to have the boot closed.hth