Locking and unlocking

Pressing the buttons locks and unlocks the doors and the tailgate when the front doors are closed, but they are not secured against theft.
The fuel filler flap remains unlocked.
See also:
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 ...
Inserting/removing the snap-in adapter
1. Press button 1 and remove the cover.
2. Insert the snap-in adapter at the front, arrow
1, and press down, arrow 2, until it engages.
To remove the snap-in adapter: press button 1.
Insert ...
Storing
1. Switch on the ignition.
2. Set the desired position.
3. Press the button. The LED in
the
button lights up.
4. Press the desired button 1 or 2. The LED
goes out.
If the M button is presse ...
