Dodge 2012 Durango - Owner Manual - Manual (Page 229)

ACC may occasionally provide braking and/or a driver
alert that you consider unnecessary. This may be the
systems response to signs, guardrails, and other station-
ary objects in a curve. This may also occur at the base of
steep hills. This is normal operation and your vehicle
does not require service. 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.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 227