Grabbed a picture for you - not bad access really.
Front of car is at bottom of picture, left side of car is to the right of picture. You can see the expansion tank at the left and the left-side AE bulb access cover at the centre bottom edge of the picture.
P.S. this is on the 218hp engine (M57D30TU) but I'm guessing the aux. pump location is the same on your 184hp engine (M57D30).