Switching on/off

Press the button.
See also:
Enabling operation in the rear
Only possible via the iDrive in the front.
1. "Settings"
2. "Allow rear control"
3. Select the desired priority.
...
BMW EfficientDynamics: More power, less fuel consumption
With high-performance engines, superior suspension technology and an
extremely torsion-resistant body, the new BMW 3-Series is building on its
position as the sportiest sedan in its segment. It is ...
Activating HDC
Activating HDC
Press the button; the LED above the button
lights up.
The LED flashes when the brakes are applied
automatically. ...
