I must be nice to have a warning that your lights are still on.
Mine could care less..... it just laughs at me i'm sure.... "good job dumbash, notice the shiney things on every corner of me, wait till you get back, hope it isn't cold outside! hahahahahahaha" Luckily the actual headlights turn off with the ignition, otherwise i would have been in baaaad shape a few times.
Anyway i'm sure the light warning uses the same speaker.