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 > Electronic components: Removing and installing/renewing icm control unit
IMPORTANT:
Read and comply with notes on PROTECTION AGAINST ELECTROSTATIC DAMAGE
(ESD protection).
WARNING:
The sensor system for triggering the airbag is installed in the ICM control unit!
The battery must be disconnected before removing the ICM control unit (ICM
control unit de-ene ...