Graphic is only an example. There may be differences in specific details depending on engine version.
Unscrew all bolts.
Remove underbody panelling (1).
Installation note: Make sure underbody panelling (1) is correctly seated.
BMW X3 Service & Repair Manual > Transfer box: Removing and installing transfer box (atc 450)
Special tools required:
00 2 030
23 4 050
IMPORTANT:
Before and after replacement, execute the "Repair" service function with the BMW diagnosis
system.
IMPORTANT:
After completion of work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.
Failure to comply with this req ...