See also:

Arming and disarming the alarm system
General information When you lock or unlock the vehicle, either with the remote control or at the door lock, the alarm system is armed or disarmed at the same time. Door lock and armed alarm sys ...

At a glance
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Safety
Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...