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:
Fluid Capacities
...
Blower Control
Rotate this control to regulate the
amount of air forced through the ventilation
system in any mode. The
blower speed increases as you move
the control to the right from the “O”
(OFF) ...
Master Cylinder – Brake Fluid Level Check
Check the fluid level in the master cylinder immediately
if the brake system warning light indicates system failure.
Check the fluid level in the master cylinder when performing
underhood service ...
