Jeep Grand Cherokee 2012, Owner'S Manual, Page: 224 / 688

Using ACC On Hills
When driving on hills, ACC may not detect a vehicle in
your lane. Depending on the speed, vehicle load, traffic
conditions, and the steepness of the hills, ACC perfor-
mance may be limited.
Lane Changing
ACC will not detect a vehicle until it is completely in the
lane in which you are traveling. In the illustration shown,
ACC has not yet detected the vehicle changing lanes and it
may not detect the vehicle until it’s too late for the ACC
system to take action. ACC will not detect a vehicle until it
is completely in the lane. There will not be sufficient
distance to the lane-changing vehicle. Always be attentive
and ready to apply the brakes if necessary.
220 UNDERSTANDING THE FEATURES OF YOUR VEHICLE