do you have problems with the front sensor for automatic brakes or obstruccion detected
I doubt if you will get any kind of useful reply to your question . I guess it was a question but I did not see a question mark. If this system is activating when it should not then you most likely will need a dealer to look at it and it is possible that you might still be in the warranty period .
It’s a known problem. Go back to the dealer and see what they tell you. 2018 Nissan Altima Service Brakes Problems | CarComplaints.com