2007 Yaris Dash Issue

[Treadders]

Hey guys

Having an issue with my 2007 YR Yaris.

When I turn on the headlights, my speedo no longer dims, and when I take out the keys and leave the headlights on, there is no buzzer.

Would appreciate any and all help/advice.

It just started happening recently.

Also, I can't remember, do the fan controls/heater controls light up? Mine aren't, and I'm wondering if it's an issue or if they never did.

Thanks guys

Treadders