Overhead controls - what does this button do?

[krysus]

https://imgur.com/a/3EymS

Been through the manual twice now, can't find that button anywhere.

Anyone know what it does?

[mhurer]

Puts interior lights on when any of the doors are open.

When we bought the car the red light was off and we noticed the interior lights did not come on (it was night, so it was obvious). We pressed the red button and now the interior lights come on when doors are open.

[jds68]

Didn't you just press it to see what it would do? That's what I did when wondering what it did and as if by magic the lights came on when opening the door!