Jeep grand cherokee 2015 Owner's Manual page 222

220 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
FCW Message
When the system determines a collision with the vehicle
in front of you is no longer probable, the warning
message will be deactivated.
NOTE:
• The minimum speed for FCW activation is 5 mph
(10 km/h).
• The FCW alerts may be triggered on objects other than
vehicles such as guard rails or sign posts based on the
course prediction. This is expected and is a part of
normal FCW activation and functionality.
• It is unsafe to test the FCW system. To prevent such
misuse of the system, after four Active Braking events
within a key cycle, the Active Braking portion of FCW
will be deactivated until the next key cycle.
• The FCW system is intended for on-road use only. If
the vehicle is taken off-road, the FCW system should
be deactivated to prevent unnecessary warnings to the
surroundings. If the vehicle enters 4WD Low Range,
the FCW system will be automatically deactivated.