Nissan Juke 2024 Owners Manual
7.22.2.1. System Operation
The IEB system will function when your vehicle is driven at speeds above approximately 5 km/h (3 MPH).
If a risk of a forward collision is detected, the IEB system will first provide a warning to the driver by flashing the warning (yellow) in the Vehicle Information Display and providing an audible alert.
If the driver applies the brakes quickly and forcefully after the warning, and the IEB system detects that there is still the possibility of a forward collision, the system will automatically increase the braking force.
If the driver does not take action, the IEB system issues the second visual warning (red) and audible warning, then the system applies partial braking.
If the risk of a collision becomes imminent, the IEB system applies harder braking automatically.
Warning | Visual | Audible |
First |
| Chime |
Second |
| High pitched chime |
The vehicle’s brake lights come on when braking is performed by the IEB system.
When the IEB system detects an obstacle in the path of the vehicle and displays the IEB warning, a noise may be heard from the engine bay as the vehicle primes the brakes to improve response time.
Depending on vehicle speed and distance to the vehicle ahead, as well as driving and roadway conditions, the system may help the driver avoid a forward collision or may help mitigate the consequences of a collision should one be unavoidable.
If the driver is handling the steering wheel, accelerating or braking, the IEB system will function later or will not function.
The automatic braking will cease under the following conditions:
When the steering wheel is turned as far as necessary to avoid a collision.
When the accelerator pedal is depressed.
When there is no longer a vehicle detected ahead.
If the IEB system has stopped the vehicle, the vehicle will remain at a standstill for approximately 2 seconds before the brakes are released.
Listed below are the system limitations for the Intelligent Emergency Braking system. Failure to operate the vehicle in accordance with these system limitations could result in serious injury or death.
The IEB system cannot detect all vehicles under all conditions.
The radar sensor does not detect the following objects:
Pedestrians, animals or obstacles in the roadway
Oncoming vehicles
Crossing vehicles
The radar sensor has some performance limitations. If a stationary vehicle is in the vehicle's path, the IEB system will not function when the vehicle is driven at speeds over approximately 80 km/h (50 MPH).
The radar sensor may not detect a vehicle ahead in the following conditions:
Dirt, ice, snow or other material covering the radar sensor.
Interference by other radar sources.
Snow or road spray from travelling vehicles.
If the vehicle ahead is narrow (e.g. motorcycle).
When driving on a steep downhill slope or roads with sharp curves.
When towing a trailer.
In some road or traffic conditions, the IEB system may unexpectedly apply partial braking. When acceleration is necessary, continue to depress the accelerator pedal to override the system.
The IEB system may react to a roadside object (traffic sign, guard rail etc.).
Braking distances increase on slippery surfaces.
Excessive noise will interfere with the warning chime sound, and the chime may not be heard.
The system is designed to automatically check the sensor's functionality, within certain limitations. The system may not always properly warn the driver about functional issues during the first few minutes after starting the engine. The system may not detect some forms of obstruction of the sensor area such as ice, snow, mud, stickers, for example. In these cases, the system may not be able to warn the driver properly. Be sure that you check, clean and clear the sensor area regularly.
The Intelligent Emergency Braking system may react to
objects on the roadside (traffic sign, guard rail, pedestrian, vehicle, etc.)
objects above the road (low bridge, traffic sign, etc.)
objects on the road surface (railroad track, grate, steel plate, etc.)
objects in a parking garage (beam, pillar, etc.)
When driving on some roads, such as winding, hilly, curved, narrow roads, or roads which are under construction, the sensor may detect vehicles in a different lane, or may temporarily not detect a vehicle travelling ahead. This may cause the system to work inappropriately.
The detection of vehicles may also be affected by vehicle operation (steering manoeuvre or travelling position in the lane, etc.) or vehicle condition. If this occurs, the system may warn you by blinking the system indicator and sounding the chime unexpectedly. You will have to manually control the proper distance to the vehicle travelling ahead.