98 E320 AC Climate control - background light is out

What is the possible cause on this, background light is not working when head lights are on?
The AC / hot air is working fine, is it fuse got burned?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.