Nissan ARIYA 2024 Owners Manual
6.5.7.68. 71. [Steering Assist Not Available Cannot Detect Lane] indicator (where fitted)
This indicator may appear when the Steering Assist system is engaged. The Steering Assist system is automatically cancelled when the lane markers in the travelling lane cannot be correctly detected for a period of time due to such items as a snow rut, reflection of light on a rainy day or several unclear lane markers are present.
If you want to use the Steering Assist system again, cancel the ProPILOT Assist system and set it again when lane markers are clearly visible.
Owners Manual