ACC Unavailable Warning
If the system turns off, and the EVIC displays “Adaptive Cruise Control (ACC) Unavailable”, there may be a temporary malfunction that limits ACC functionality.
Although the vehicle is still drivable under normal conditions, ACC will be temporarily unavailable. If this occurs, try activating ACC again later, following a key cycle. If the problem persists, see your authorized dealer.

Adaptive Cruise Control (ACC) Unavailable Warning
See also:
Answer Or Ignore An Incoming Call — No Call Currently In Progress
When you receive a call on your mobile phone, the
Uconnect™ Phone will interrupt the vehicle audio system,
if on, and will ask if you would like to answer the
call. Press the button to accept ...
Parking Brake
Before leaving the vehicle, make sure that the parking
brake is fully applied and place the shift lever in the
PARK position.
The foot operated parking brake is positioned below the
lower left ...
Manual Compass Calibration — If Equipped
If the compass appears erratic and the CAL indicator
does not appear in the EVIC display, you must put the
compass into the Calibration Mode manually, as follows:
1. Turn ON the ignition switch.
...
