Since the f15 X5 didn’t have the K2O (kick to open) tailgate.. You’ll have to look to the F16 X6 (for the parts?)...or go after market like this F15 X5 owner:
https://f15.bimmerpost.com/forums/sh...0#post22363360
Here’s an old thread that has coding info if you install the f16 X6 parts:
https://f15.bimmerpost.com/forums/sh....php?t=1540680