When the vehicle is locked, the vehicle alarm system responds to:
The alarm system briefly signals tampering:
Arming and disarming the alarm system
When you unlock or lock the vehicle, either with the remote control or via the Comfort Access, the alarm system is disarmed or armed at the same time.
Door lock and armed alarm system
The alarm system is triggered when the door is opened, when the vehicle is unlocked via the door lock.
Tailgate and armed alarm system
The tailgate can be opened even when the alarm system is armed.
After the tailgate is closed, it is locked and monitored again when the doors are locked.
The hazard warning system flashes once.
Panic mode
You can trigger the alarm system if you find yourself in a dangerous situation.
Press button on the remote control for at least 3 seconds.
To switch off the alarm: press any button.
BMW X3 Service & Repair Manual > Electronic switching or control units: Coding control module (dme/dde)
Switch on ignition.
Connect MoDiC or DIS/GT1 Tester.
Select "Coding" program.
For subsequent procedure, follow instructions in MoDiC or DIS/GT1 Tester.
Carry out adjustment of following control units:
EWS (electronic immobilizer)
DME (Digital Motor Electronics) or
DDE (Digital Di ...