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:
Ambient Light
The overhead console is equipped with an ambient light
feature. This light casts illumination for improved visibility
of the floor center console and PRNDL area.
Ambient Light ...
To Activate
Push the ON/OFF button. The Cruise Indicator Light in
the Electronic Vehicle Information Center (EVIC) will
illuminate. To turn the system off, push the ON/OFF
button a second time. The Cruise I ...
Extreme Cold Weather (Below –20°F Or 29°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (available
from your authorized dealer) is recommended. ...
