interior heater and vent control lites

I have a 2000 new beetle that the interior illumination lites for the heater and A/C controls are not working. Ican not find the fuse to check if that is blown. how else can I check out this problem to see if I can get them working again?

Thanks

Enterprize

The bulb is burnt out. Pull off the center knob and use a small piece of vacuum hose to pull the bulb out.