The 2021 Nissan Rogue's Intelligent Lane Intervention (ILI) helps prevent unintended lane departures by providing gentle steering assistance and warnings. When this feature becomes inoperative, understanding the system helps identify whether conditions or a fault is responsible.
Intelligent Lane Intervention Explained
ILI monitors lane markings using the forward camera. When the Rogue begins drifting toward a lane line without turn signal activation, the system warns the driver and provides gentle steering torque to guide the vehicle back toward lane center. It's designed as an assist, not autonomous steering.
Why ILI May Be Inoperative
Several conditions cause ILI to become inoperative. Camera obstruction from dirt, fog, or windshield damage prevents lane detection. Speed outside operating range (too slow or too fast) disables the feature. Poor lane marking visibility—faded lines, construction zones, snow coverage—prevents detection. System faults also cause inoperative status with accompanying warnings.
Inoperative vs. Not Activated
Distinguish between the system being inoperative (unable to function) and simply not activated (conditions don't trigger intervention). ILI only activates when drift is detected—if you're centered in lane, no intervention occurs even when the system is working properly.
Restoring ILI Operation
If ILI is inoperative due to temporary obstruction, cleaning the camera area often restores function. Weather-related unavailability clears when conditions improve. Persistent inoperative status with warning messages requires diagnosis.