Picture #1 is headlight switch in AUTO mode. Picture #2 is headlight switch OFF. Normal operation. Headlights OFF assumes daylight conditions, which calls for full instrument brightness. AUTO mode varies instrument illumination to match headlight status (on/off), depending upon ambient brightness. This is all in your Owners Manual.Why is this like this? See the attached pictures
I realized that there is a adjustment button which made the dashlights dim. Later i adjusted and display lights are normal now.It looks pretty normal to me. When the lights come on, the dash lights are supposed to dim. Check page 3-49 of your owner's manual to see how this is adjusted. You may have hit the adjustment without realizing it.