See also:

Note
Children in the vehicle Do not leave children unattended in the vehicle; otherwise, they could endanger themselves and other persons, e.g., by opening the doors. ...

Long-term vehicle storage
Your service center can advise you on what to consider when storing the vehicle for longer than three months. ...

2011 BMW 328 review
As BMW runs a war path with new model introductions — two gigantic, turtle-shaped crossovers a year, at this pace — they haven't forgotten where the profit margin lies. It's in the little 3 Series ...