See also:

Removing the remote control from the ignition lock
Do not forcibly pull the remote control out of the ignition lock Do not forcibly pull the remote control out of the ignition lock as this may cause damage.◀ Before removing the remote c ...

After the ignition is switched off
When the remote control is removed or the ignition is switched off, the windows can continue to be operated for approx. 1 minute as long as no door is opened. ...

If the worst comes to the worst: BMW Assist Emergency Call with automatic vehicle location
In the event of an accident in the new BMW 3-Series, the Advanced eCall function from BMW ConnectedDrive allows the emergency services to receive detailed information on the type of collision and ...