Ds7 ambient light

Hi, I just purchased a DS7 in the Opera version. I noticed from the menu that I can set the ambient lights on the sides of the doors and adjust the intensity. but they don’t work. I wanted to ask if it is a standard accessory and therefore perhaps it needs to be replaced. Thank you

Have you verified that they don’t work when the car is in night mode (i.e. when it’s dark outside, or when in a tunnel or a dark garage)?

Yes, I tried it and they don’t even turn on at night. from the menu are set to on. and maximum intensity