Please do create a signature...it helps us to help you better...it supplies us with enough information to tailor our answers/suggestions etc specficially for your model...it also helps us if we need to look up information or diagrams to answer your questions. There are multiple models, engins, transmissions, and other changes that occur during the production run from 1999-2006.
For instance, your build date would have helped us know specifically how your X5 is equipped for Bluetooth. Especially if it was built after 10/2004.
If you have the options listed below...you don't need the "pairing button" in the center console. You can use the "talking head" button on the steering wheel:
Hint:
KL R &
KL 15 = ignition position 1 & position 2
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