Necessary preliminary work:
Pull storage compartment (1) in the upper area out and fold down as shown.
Release screws (2) on fresh air grille (1).
Lift the fresh air grille (2) upper over the locking tabs (1) and remove toward the front.
Disconnect associated plug connection (3).
Remove fresh air grille (2).
BMW X3 Service & Repair Manual > Transfer case, general: Change transfer box oil (atc 45l)
Special tools required:
00 2 080
IMPORTANT:
Use only the approved TRANSMISSION OIL in the transfer box.
Failure to comply with this requirement will result in serious Information damage to the
transfer box!
NOTE:
Only change oil when transfer box is at normal operating tempera ...