Does anyone know what this light is for?

Comes on whenever you have parking lights or headlight on; off with DRL or lights off. Nothing fancy.

 

It's a light that is so dim you can't see it.

 

I might be incorrect but it seems I remember having the option to turn this light off with Carista. "Courtesy Light" option I think. Again, I might be wrong.

 

Well, that makes sense. It is a Toyota.

 

Hmm... What would a light be used for?

And its a small light over your head providing visibility of the shifter and controls but not so bright to hinder visibility at night....

I wonder. lol