See also:

Active Noise Control (ANC)
By identifying undesirable sounds in the cabin and then playing back through the speakers sound waves of opposite phase, the original noises are cancelled out, making the M's interior a quieter, m ...

Head restraints
WARNING Head restraints supplement the other vehicle safety systems. They may provide additional protection against injury in certain rear end collisions. Adjust the head restraints properly, as spec ...

Emergency engine shut off
To shut off the engine in an emergency situation while driving, perform the following procedure: . Rapidly push the push-button ignition switch 3 consecutive times in less than 1.5 seconds, or . Push ...