Locking separately
The trunk lid can be locked separately using the switch in the front center armrest.
▷ Trunk lid secured, arrow 1.
▷ Trunk lid not secured, arrow
2.

Slide the switch into the arrow 1 position. This secures the trunk lid and disconnects it from the central locking system.
When the center armrest is locked, the tailgate cannot be accessed. This is beneficial when the vehicle is parked using valet service. The infrared remote control can be handed out without the key.
See also:
General malfunctions
▷ CD/DVD changers and players have been
optimized for performance in vehicles. In
some instances they may be more sensitive
to faulty CDs/DVDs than stationary devices
would be.
▷ ...
Locking
▷ Press the button. The doors are
locked.
▷ Press the lock button of a door. To prevent
you from being locked out, the opened driver's
door cannot be locked using the lock
button. ...
Under the Hood
The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder
engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph
time of 5.5 seconds for both the coupe an ...
