What is this warning signal on the DB11?

[Doh Jiggle]

Hello everyone. I’m a long time lurker first time poster. Finally got my first Aston. The car is perfect except for one little thing. Every time I turn on the car, the dash shows an overhead interior image with the back seats highlighted in red. I understand it’s a seat belt warning for passengers in the back, but there is no one in the back. Nothing. Is this normal?

[Ninja59]

[Doh Jiggle]

Thanks you! That answers my question.

[TeddS]

I get the same warning in mt DBX. Annoying!