We are living woodinville, 10 minutes away from your place, I am more than happy to code for you, but in case you really want to code 2012 X5 by yourself, here are the steps
1. Buy cable from here, make an offer $85, the seller will accept it. The cable is shipped from China, it may take 10-15 days.
2. Read this guide (link), and understand the whole procedure. Pay attention to the tricks in my first post.
3. Tweak these parameters on your X5
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Wiper wipes to End position after turning engine off
When Wiper is Wiping, and you turn engine off, it will now keep on going.
Module JBBF
ZYCLUS_VOLLEND_KLR_AUS
aktiv
===================
Disable Sidemarker
FRM Module
SIDEMARKER_US
nicht_aktiv
===================
Double Blink Hazards (some thing cool looking)
FRM Module
DOPPELBLINKIMPULS_WARNBLK
aktiv
===================
Key fob remote mirror close
FRM Module
ASP_KOMFORT_EINKLAPP
aktiv
===================
Fog lights with Highbeam on
FRM Module
FL_UND_NSW_NICHT_GLEICHZ
nicht_aktiv
Fog lights with Highbeam Flash
LH_UND_NSW_NICHT_GLEICHZ
nicht_aktiv
===================
Key fob Windows UP when press and hold the lock button
CAS Module
KOMFORTSCHLIESSUNG_FB (window up through key fob)
aktiv
KOMFORTSCHLIESSUNG_PA (window up through comfort access)
aktiv
===================
Eject Keyfob with engine off
Press and hold the start/stop button 1 second. Key will be released.
CAS Module
KOMFORT_EJECT
nicht_aktiv -> aktiv
at the same time it will Unlock doors when engine off/key ejected
CAS
ER_KEYOUT_AUTOVR
nicht_aktiv -> aktiv
===================
Remote trunk close (closing tailgate with key fob and button inside cabin)
HKL Module
SCH_FBD
aktiv
SCH_TOEHKI
aktiv
TASTER_FBD
aktiv
===================
V=Digital Speed (you will have to reset the time after)
KOMBI Module
BC_DIGITAL_V
aktiv
BC_DIGITAL_V_KORREKTUR
aktiv
===================
Disable iDrive Disclaimer
CIC Module
LEGAL_DISCLAIMER_TIME
kein_ld

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Remove IDrive warning when starting the car. (this is for CCC units)
CAPPL
LEGAL_DISCL
aktiv -> nicht_aktiv
===================

It might look simple, but you may need to take fair amount of time to understand the principle behind in order not to screw your car, there are some confusions because some steps in the guide may not apply.