Pre-Collision Assist Unavailable Indicator  A telltale illuminates in the instrument cluster display to indicate if the system is disabled, unavailable, or temporarily degraded due to external environmental conditions.
Note:   If the telltale illuminates without a corresponding information message, make sure the setting for automatic emergency braking is switched on.See  Switching Automatic Emergency Braking On and Off .  No action is needed unless an information message appears.
  See   Pre-Collision Assist Precautions