Nissan Leaf 2018-2025 (ZE1) Owner's Manual : Intelligent Blind Spot Intervention (I-BSI)

WARNING

Failure to strictly adhere to these safety warnings and operational instructions for the Intelligent Blind Spot Intervention (I-BSI) system could result in unpredictable vehicle behavior, potentially leading to serious personal injury or fatal accidents.

  • The I-BSI system is a driver-assist feature and is not a substitute for standard, attentive driving procedures. It is not designed to prevent physical contact with other vehicles, road infrastructure, or obstacles. When executing a lane change in your Nissan Leaf, you must always verify the path is clear by utilizing the side and rearview mirrors, and physically checking your blind spots by turning your head in the direction of the intended maneuver. Never place total reliance on the I-BSI system to ensure safety.
  • The radar and sonar detection technologies have inherent physical limitations.

    Not every moving object, cyclist, or vehicle will be successfully detected in all scenarios. Operating the I-BSI system in specific road, terrain, lane-marking, traffic, or severe weather conditions may cause the system to function improperly or experience performance degradation.

    Always remain fully in control of your vehicle and rely on your own active observation to prevent potential collisions.

The I-BSI system in your Nissan Leaf serves a dual purpose: it provides visual alerts to notify the driver of vehicles present in adjacent lanes and provides active steering assistance to help guide the vehicle back toward the center of your current lane if a potential lane-departure conflict is detected.

Side mirror indicator and instrument cluster display demonstrating the Nissan Leaf I-BSI safety alert

The I-BSI system utilizes high-precision radar sensors (1) mounted near the rear bumper to monitor for vehicles occupying the adjacent lanes. Complementing these sensors, the system integrates a sophisticated camera (2) positioned behind the windshield, which continuously monitors lane markings to track the positioning of your Nissan Leaf relative to its current travel lane.

Technical diagram showing the I-BSI radar coverage zone surrounding the Nissan Leaf
Detection zone

The system’s radar sensors are configured to detect vehicles occupying the space on either side of your vehicle within a defined monitoring envelope.

This detection zone spans from the trailing edge of the outside rearview mirror and extends approximately 10 feet (3.0 meters) rearward past the rear bumper, while also covering a width of approximately 10 feet (3.0 meters) out to the sides.

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I-BSI system operation
Side Indicator Light Blind Spot Warning (BSW) indicator Intelligent Blind Spot Intervention (I-BSI) indicator Dynamic driver assistance switc ...

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