jw2008x5msport

the 2008 doesnt have a bleed screw, its done by a procedure with the electronic water pump but i cant get it to bleed the system

hi dave its a 2008 m sport 3.0sd twin turbo diesel.noticed the level was low so i topped it up. tried to do the bleed by putting my foot on the accelertor pedal and fan on lowest speed and on full heat. it sounded like the pump was making a noise but no water was coming into the expansion bottle. i started the car and it sends water into the expansion bottle. i screwed the top on and within a couple of mins it was starting to come out the top.

ive topped up my coolant and turned the fan to the lowest setting and temp to the highest and put my foot on the accelerator pedal for 10 seconds but it wont bleed the system. if i start the car it sends water into the overflow bottle. when i put the lid on the expansion bottle after a few min it will start pushing water out of the top, has my water pump had it?