ACC not available

Several conditions exist which can cause ACC to deactivate or prevent ACC from activating when requested. These conditions include:
• The sensor is blocked, refer to Blocked sensor in this section.
• Brake temperature is high, refer to Hilly condition usage in this
section.
• A failure has occurred in the ACC system or related system.
See also:
Voice commands in climate mode
Please refer to the Voice commands in climate mode section of the
Navigation system supplement for more information on using voice
commands with the climate control system. ...
Setting adaptive cruise control
1. Press and release ON. The
message center will display the
gray ACC indicator light, current
gap setting and SET.
2. Accelerate to the desired speed.
3. Press SET upward and release.
...
Tire wear
When the tread is worn down to
1/16th of an inch (2 mm), tires must
be replaced to help prevent your
vehicle from skidding and
hydroplaning. Built-in treadwear
indicators, or “wear bars”, wh ...
