WARNING   WARNING:  You are responsible for controlling your vehicle at all times. The system is designed to be an aid and does not relieve you of your responsibility to drive with due care and attention. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death.
WARNING   WARNING:  The system does not detect vehicles that are driving in a different direction, cyclists or animals. Apply the brakes when necessary. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death.
WARNING   WARNING:  The system does not operate during hard acceleration or steering. Failure to take care may lead to a crash or personal injury.
WARNING   WARNING:  The system may fail or operate with reduced function during cold and severe weather conditions. Snow, ice, rain, spray and fog can adversely affect the system. Keep the front camera and radar free of snow and ice. Failure to take care may result in the loss of control of your vehicle, serious personal injury or death.
WARNING   WARNING:  Some situations and objects prevent hazard detection. For example low or direct sunlight, inclement weather, unconventional vehicle types, and pedestrians. Apply the brakes when necessary. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death.
WARNING   WARNING:  Take additional care if your vehicle is heavily loaded or you are towing a trailer. These conditions could result in reduced performance of this system. Failure to follow this instruction could result in the loss of control of your vehicle, personal injury or death.
WARNING   WARNING:  The system cannot help prevent all crashes. Do not rely on this system to replace driver judgment and the need to maintain a safe distance and speed.

Using the Pre-Collision Assist System
The Pre-Collision Assist system is active at speeds above approximately 3 mph (5 km/h) and pedestrian detection is active at speeds up to 50 mph (80 km/h).
Collision Alert
If your vehicle is rapidly approaching another stationary vehicle, a vehicle traveling in the same direction as yours, or a pedestrian within your driving path, the system provides three levels of functionality:
  1. Alert
  1. Brake Support
  1. Active Braking
Collision AlertRed Warning Light
Alert: When active, a flashing visual warning appears and an audible warning tone sounds.
Brake Support: The system helps reduce the impact speed by preparing the brakes for rapid braking. The system does not apply the brakes. If you press the brake pedal, the system could apply additional braking up to maximum braking force, even if you lightly press the brake pedal.
Active Braking: Active braking may activate if the system determines that a collision is imminent. The system may help the driver reduce impact damage or avoid the crash completely.
Note:   Brake Support and Active Braking are active at speeds up to 75 mph (120 km/h). If the vehicle has a radar sensor or Adaptive Cruise Control, then Brake Support and Active Braking are active up to the maximum speed of the vehicle.
Note:   If you perceive Pre-Collision Assist alerts as being too frequent or disturbing, then you can reduce the alert sensitivity, though the manufacturer recommends using the highest sensitivity setting where possible. Setting lower sensitivity would lead to fewer and later system warnings.
Note:   The Pre-Collision Assist system disables when you select 4X4 LOW, Deep Snow/Sand mode, Rock Crawl mode, or when you manually disable AdvanceTrac™.
Distance Indication and Alert (If Equipped)
Distance Indication and Alert is a function that provides the driver with a graphical indication of the time gap to other preceding vehicles traveling in the same direction. The Distance Indication and Alert screen in the display screen shows one of the graphics that follow.
Distance Alert
If the time gap to a preceding vehicle is small, a red visual indication displays.
Note:   Distance Indication and Alert deactivates, and the graphics do not display when Adaptive Cruise Control is active.

Speed   Sensitivity   Graphics   Distance Gap   Time Gap  
62 mph (100 km/h)   Normal   Grey   >82 ft (25 m)   >0.9sec  
62 mph (100 km/h)   Normal   Yellow   56–82 ft (17–25 m)   0.6sec — 0.9sec  
62 mph (100 km/h)   Normal   Red   <56 ft (17 m)   <0.6sec  

Adjusting the Pre-Collision Assist Settings
You can adjust the following settings by using the information display controls.
  • You can change Alert and Distance Alert sensitivity to one of three settings.
  • You can switch Distance Indication and Alert on or off.
  • If required, you can switch Active Braking on or off.
  • If required, you can switch the entire Pre-Collision Assist feature on or off.
Note:   Active braking automatically turns on every time you switch the ignition on.
Note:   If your vehicle has a radar sensor, we recommend that you switch the system off if you install a snow plow or similar object in such a way that it may block the radar sensor. Your vehicle remembers the selected setting across key cycles.
Blocked Sensors
Pre-Collision Assist Front Camera and Sensor
1Camera.
2Radar sensor (if equipped).
If a message regarding a blocked sensor or camera appears in the information display, the radar signals or camera images have become obstructed. If your vehicle has a radar sensor, it is located behind the fascia cover in the center of the lower grille. With a blocked sensor or camera, the Pre-Collision Assist system may not function, or performance may reduce. The following table lists possible causes and actions for when this message displays.
Camera Troubleshooting

Cause   Action  
The windshield in front of the camera is dirty or obstructed in some way.   Clean the outside of the windshield in front of the camera.  
The windshield in front of the camera is clean but the message remains in the display screen.   Wait a short time. It may take several minutes for the camera to detect that there is no obstruction.  

Radar Troubleshooting (If Equipped)

Cause   Action  
The surface of the radar in the grille is dirty or obstructed in some way.   Clean the grille surface in front of the radar or remove the object causing the obstruction.  
The surface of the radar in the grille is clean but the message remains in the display screen.   Wait a short time. It may take several minutes for the radar to detect that there is no obstruction.  
Heavy rain, spray, snow or fog is interfering with the radar signals.   Pre-Collision Assist disables itself. The system automatically reactivates a short time after the weather conditions improve.  
Swirling water or snow or ice on the surface of the road may interfere with the radar signals.   Pre-Collision Assist disables itself. The system automatically reactivates a short time after the weather conditions improve.  
Radar is out of alignment due to a front end impact.   Contact an authorized dealer to have the radar checked for proper coverage and operation.  

Note:   Proper system operation requires a clear view of the road by the camera. Have any windshield damage in the camera's field of view repaired.
Note:   If something hits the front end of your vehicle or damage occurs and your vehicle has a radar sensor, the radar sensing zone may change. This could cause missed or false vehicle detections. Contact an authorized dealer to have the radar checked for proper coverage and operation.
Note:   If your vehicle detects excessive heat at the camera or a potential misalignment condition, a message may display in the information display indicating temporary sensor unavailability. When operational conditions are correct, the message deactivates. For example, when the ambient temperature around the sensor decreases or the sensor automatically recalibrates successfully.

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