Here's the procedure.

1. Start car and get up to operating temperature.

2. Set heater fan and temp to full (so full fan and 90 degrees)

3. Set the temp wheel between the vents to the 3 red dots for full heat

4. Open bleed screw and watch for air bubbles

5. Close bleed screw when clean flow of coolant with no bubbles

6. Let engine cool down, check the coolant level and top up as necessary.

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)