I have a 2010 RX 450h, but I bet this feature is shared across both the 350 and 450h. I want the instrument panel to only auto-dim when it's almost pitch dark and go bright when it's barely light outside. In other words, I want the panel to dim only at night, not at sunset or sunrise. I can't hardly see it when it auto dims on factory settings. I'm familiar with the sensitivity settings in the vehicle customization. How should these be set to prevent the panel from going dim unless it's pitch dark outside?

 

The dimming of the instrument panel is linked to the headlights. So when the headlights turn on, in the panel will dim. I guess if you turn the sensitivity sensor to the darkest setting this will prevent them from turning on so early.