My 2018 Honda’s rear view camera does not show the guide lines for at least 10-15 seconds. By the time the lines show up, the car has backed out of the parking space.
Try it :
Get into car
Start car
Place seat belt on
Place car into reverse
Back up

 

welcome to the forum, due to the car is brand new under warranty, you need to take this to the Honda Dealer to get it fixed.

 

 

get in touch with Honda of SC customer service and ask it they may assist you. this would be above the dealerships and may be able to get it fixed.