E53 X5 Auxiliary Fan test?

[Bimmernut]

OK - per Effduration:

1) Unplugged the temp sensor on the lower radiator hose. Fan did NOT kick on.
2) Found the sub-menu, option 7, pushed to 100C. Fan did NOT kick on. Ran the car after to cool it down and found that at highway speeds it drops to about 89C @ 40mph+

Per WorkingOnIt thread:

1) Unplugged the A/C high pressure sensor. Fan did NOT kick on.
2)Wiring plug IS plugged in and I verified that it IS getting 12 volts.

Based on this, I think it's the fan. Going to order a returnable unit just in case (unless somebody else kicks in another thought?)

Thank you sirs!