Maintaining/storing the speed
Press the button.
or:

Press the rocker switch while the system is interrupted.
When the system is switched on, the current speed is maintained and stored as the desired speed.
It is displayed in the speedometer and briefly displayed in the instrument cluster, Displays in the instrument cluster.
When cruise control is maintained or stored, DSC Dynamic Stability Control is switched on, if necessary.
See also:
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 ...
BMW 7 Series Owners Manual
h4 {color:#800000}
h3 {color:#0033CC}
h2 {color:#008000}
h1 {color:#FF0000}
...
Storage compartment
A storage compartment is located under the
armrest between the front seats and, depending
on the vehicle's equipment, also a cover for the
mobile phone cradle or the snap-in adapter.
Details on ...
