Rain sensor
If the car is equipped with a rain sensor, the time between wipes is controlled automatically and depends on the intensity of the rainfall.
The rain sensor is mounted on the windshield, directly in front of the interior rearview mirror.
Activating the rain sensor

Activating the rain sensor
Press the button, arrow 3.
The LED in the button lights up.
Rain sensor sensitivity
Turn thumbwheel 5 up or down.
Deactivating the rain sensor
Press the button again, arrow 3.
The LED goes out.
Deactivate the rain sensor in car washes
Deactivate the rain sensor when passing
through an automatic car wash; otherwise, damage
could be caused by undesired wiper activation.◀
See also:
Last destinations
At a glance
The destinations previously entered are stored
automatically.
The destinations can be called up and used as a
destination for destination guidance.
Calling up the last destinat
1. ...
Operating concept
Various functions can be called up by pressing
the control button with a pointed object, such as
the tip of a ballpoint pen or similar object. The
following setting options are displayed in succ ...
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 ...
