Pre-Collision Assist
Pre-Collision Assist with Pedestrian Detection
Pre-collision assist detects and warns of approaching hazards in the roadway. 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 multiple levels of assistance to help avoid a collision.
The system warns the driver of potential hazards by providing three levels of assistance.
If your vehicle is rapidly approaching potential hazards the system provides the following levels of functionality:
Alert: When active, a flashing visual warning appears and an audible warning tone sounds.
Brake Support: The system is designed to help reduce the impact speed by preparing the brakes for rapid braking. The system does not automatically 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.
Automatic Emergency Braking: Automatic emergency braking may activate if the system determines that a collision is imminent.
Note: If you perceive pre-collision assist alerts as being too frequent or disturbing, then you can reduce the alert sensitivity, although the manufacturer recommends using the highest sensitivity setting where possible. Setting lower sensitivity would lead to fewer and later system warnings.
Each system has various levels of detection capabilities. See Pre-Collision Assist Limitations (page 348).
347
|
|
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: 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.
WARNING: In situations where the vehicle camera has limited detection capability, this may reduce system performance. These situations include but are not limited to direct or low sunlight, vehicles at night without tail lights, unconventional vehicle types, pedestrians with complex backgrounds, running pedestrians, partly obscured pedestrians, or pedestrians that the system cannot distinguish from a group. Failure to take care may result in the loss of control of your vehicle, serious personal injury or death.Pre-collision assist depends on the detection ability of its camera and sensors. Any obstructions or damage to these areas can limit detection or prevent the system from functioning. See Locating the
Pre-Collision Assist Sensors (page 349).
The system is active at speeds above 3 mph (5 km/h)
Note: The pre-collision assist system automatically disables when you select four-wheel drive low, manually disable AdvanceTrac™, or select rock crawl mode.
Note: Brake support and automatic emergency braking are active at speeds up to 75 mph (120 km/h). If the vehicle has a radar sensor included with adaptive cruise control, then brake support and automatic emergency braking are active up to the maximum speed of the vehicle.
Pedestrian detection is active at speeds up to 50 mph (80 km/h).
Pedestrian detection operates optimally when detected hazards are clearly identifiable. System performance may reduce in situations where pedestrians are running, partly obscured, have a complex background, or cannot be distinguished from a group.
If your vehicle comes with a radar sensor included in adaptive cruise control, the pre-collision assist system may operate in a scenario where you are turning across an oncoming vehicle's path. Detection of vehicles driving in an oncoming direction is active if your vehicle is driving at speeds up to 19 mph (30 km/h).
E309750
348
To switch the system on or off, use the touchscreen:
You can adjust the following settings by using the touchscreen controls in the pre-collision assist menu:
E328125
settings.
pre-collision assist feature on or off.
Note: Automatic emergency braking and evasive steering turn 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.
Note: If you switch automatic emergency braking off, evasive steering assist switches off.
If a message regarding a blocked sensor or camera appears in the information display, something is obstructing the radar signals or camera images. The radar sensor is behind the fascia cover in the center of the lower grille. With a blocked sensor or camera, the system may not function, or performance may reduce. See
Note: Proper system operation requires a clear view of the road by the camera. Have any windshield damage in the area of 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 could change. This could cause missed or false vehicle detections. Have your vehicle serviced to have the radar checked for proper coverage and operation.
349
Note: If your vehicle detects excessive heat at the camera or a potential misalignment condition, a message could 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 recalibrates successfully.
Equipped)
Distance indication displays the gap between your vehicle and the vehicle ahead of you.
Note: The graphic does not display if you switch on cruise control or adaptive cruise control.
|
Vehicle Speed |
System Sensit- ivity |
Distance Indic- ator Color |
Distance Gap |
Time Gap |
|
62 mph (100 km/h). |
Normal. |
Gray. |
Greater than 82 ft (25 m). |
Greater than 0.9 seconds. |
|
Yellow. |
56–82 ft (17–25 m). |
0.6-0.9 seconds. |
||
|
Red. |
Less than 56 ft (17 m). |
Less than 0.6 seconds. |
350
To switch the system on or off, use the touchscreen:
The indicator displays the time gap between your vehicle and vehicles traveling in the same direction ahead of you.
E254791
Equipped)
The system alerts you with a warning lamp if the distance to the vehicle ahead is small.
Note: The warning lamp does not illuminate if cruise control or adaptive cruise control is active.
To adjust the sensitivity of the system, use the touchscreen:
Automatic emergency braking may activate if the system determines that a collision is imminent. The system may help reduce impact damage to avoid the crash completely.
Automatic emergency braking is only available up to certain speeds. See
Pre-Collision Assist Limitations (page 348).
351
To switch the system on or off, use the touchscreen:
(If Equipped)
If your vehicle is rapidly approaching a road user, evasive steering assist helps you steer around the road user.
After you turn the steering wheel in an attempt to avoid a crash with the road user, the system applies additional steering torque to help you steer around the road user. After you pass the road user, the system applies steering torque when you turn the steering wheel to steer back into the lane. The system deactivates after you fully pass the road user.
Note: Road users are defined as obstacles encountered on the road that the system is able to detect. See Pre-Collision Assist Precautions (page 347).
Evasive steering assist only activates when all the following occur:
Note: The system does not automatically steer around a road user. If you do not turn the steering wheel, the system does not activate.
Note: The system does not activate if the distance to the road user ahead is too small and the system cannot avoid a crash.
To switch the system on or off, use the touchscreen:
Note: If you switch automatic emergency braking off, evasive steering assist turns off.
Note: Automatic emergency braking and evasive steering assist turn on every time you switch the ignition on.
352
Pre-Collision Assist – Information Messages
A telltale illuminates in the cluster to indicate if the system is disabled or unavailable.
|
Message |
Action |
|
Pre-Collision Assist Not Available Sensor Blocked |
You have a blocked sensor due to bad weather, ice, mud or water in front of the radar sensor. You can typically clean the sensor to resolve. |
|
Pre-Collision Assist Not Available |
A fault with the system has occurred. Have your vehicle checked as soon as possible. |
353
Camera Troubleshooting
Clean the outside of the windshield in front of the camera.
Wait a short time. It could take several minutes for the camera to detect that there is no obstruction.
Camera Troubleshooting
Clean the outside of the windshield in front of the camera.
Wait a short time. It could take several minutes for the camera to detect that there is no obstruction.
Clean the grille surface in front of the radar or remove the object causing the obstruction.
Wait a short time. It could take several minutes for the radar to detect that there is no obstruction.
The pre-collision assist system is temporarily disabled. Pre-collision assist reactivates a short time after the weather conditions improve.
The pre-collision assist system is temporarily disabled. Pre-collision assist reactivates a short time after the weather conditions improve.
Have your vehicle serviced to have the radar checked for proper coverage and operation.
354
Download Manual