Nissan LEAF 2023 Owners Manual
9.11.2. I-BSI system limitations
Listed below are the system limitations for the I-BSI system. Failure to operate the vehicle in accordance with these system limitations could result in serious injury or death.
The I-BSI system cannot detect all vehicles under all conditions.
The radar sensors may not be able to detect and activate I-BSI when certain objects are present such as:
Pedestrians, bicycles, or animals.
Vehicles such as motorcycles, low height vehicles, or high ground clearance vehicles.
Vehicles remaining in the detection zone when you accelerate from a stop.
Oncoming vehicles.
A vehicle merging into an adjacent lane at a speed approximately the same as your vehicle.
A vehicle approaching rapidly from behind.
A vehicle which your vehicle overtakes rapidly.
A vehicle that passes through the detection zone quickly.
The radar sensors’ detection zone is designed based on a standard lane width. When driving in a wider lane, the radar sensors may not detect vehicles in an adjacent lane. When driving in a narrow lane, the radar sensors may detect vehicles driving two lanes away.
The radar sensors are designed to ignore most stationary objects; however, objects such as guardrails, walls, foliage and parked vehicles may occasionally be detected. This is a normal operation condition.
The following conditions may reduce the ability of the radar to detect other vehicles:
Severe weather
Road spray
Ice/frost/dirt build-up on the vehicle
Do not attach stickers (including transparent material), install accessories or apply additional paint near the radar sensors. These conditions may reduce the ability of the radar to detect other vehicles.
The camera may not detect lane markers in the following situations and the I-BSI system may not operate properly.
On roads where there are multiple parallel lane markers; lane markers that are faded or not painted clearly; yellow painted lane markers; non-standard lane markers; lane markers covered with water, dirt, snow, etc.
On roads where discontinued lane markers are still detectable.
On roads where there are sharp curves.
On roads where there are sharply contrasting objects, such as shadows, snow, water, wheel ruts, seams or lines remaining after road repairs.
On roads where the travelling lane merges or separates.
When the vehicle’s travelling direction does not align with the lane markers.
When travelling close to the vehicle in front of you, which obstructs the lane camera unit detection range.
When rain, snow or dirt adheres to the windscreen in front of a lane camera unit.
When the headlights are not bright due to dirt on the lens or if aiming is not adjusted properly.
When strong light enters a lane camera unit. (For example: light directly shines on the front of the vehicle at sunrise or sunset.)
When a sudden change in brightness occurs. (For example: when the vehicle enters or exits a tunnel or under a bridge.)
Do not use the I-BSI system under the following conditions because the system may not function properly.
During bad weather (for example: rain, fog, snow, etc.).
When driving on slippery roads, such as on ice or snow, etc.
When driving on winding or uneven roads.
When there is a lane closure due to road repairs.
When driving in a makeshift or temporary lane.
When driving on roads where the lane width is too narrow.
When driving with a tyre that is not within normal tyre conditions (e.g., tyre wear, low tyre pressure, installation of spare tyre, tyre chains, nonstandard wheels).
When the vehicle is equipped with non-original brake parts or suspension parts.
Excessive noise (e.g., audio system volume, open vehicle window) will interfere with the chime sound, and it may not be heard.