To resume cruising speed at more than approximately 25 mph (40 km/h)

If any method other than the CRUISE ONOFF switch was used to cancel cruising speed and the system is still activated, the most recent set speed will automatically resume when the RES/+ switch is pushed. It will not resume, however, if the vehicle speed has dropped below approximately 25 mph (40 km/h)
See also:
Lighting control
The light switch has a Headlight and a Parking light position.
To operate the lights, turn the knob at the end of the control lever to one of
the following positions:
(1) OFF position
(2) Parki ...
XM, HD RADIO TECHNOLOGY, BLUETOOTH AND TOUCH-SCREEN NAVIGATION DELIVER
UNRIVALED MIDSIZE SEDAN TECHNOLOGY CHOICES
Touch-screen navigation is available on all trim levels and includes a
high-resolution screen. This system provides new features including Bluetooth
streaming audio capability. This easy-to-use un ...
Smart key functions
Carrying the smart key, you may lock and unlock the vehicle doors. Also, you
may start the engine. Refer to the following, for more details.
...


