Hints
Once the temperature is reduced, e.g. through shadow or climate control system, the normal functions are re-established.
Switching on
1. Switch on the ignition.
2. Press the controller.
Switch off
1. Press button.
2. "Turn off control display"
BMW X3 Owners Manual > Comfort Access: Malfunction
Remote control detection by the vehicle can
among others be malfunctioning under the following
circumstances:
The battery of the remote control is discharged.
Replace the battery
Interference of the radio connection from
transmission towers or other equipment
with high transmit power.
...