The display brightness of my Z-N538 seems too dark at daylight? I am driving with daytime running light

AW: The “Illu signal” on the ISO connector is used for screen brightness control. Low beam (main headlights) ON with dimmer mode = Auto means dimmed screen (brightness value “night”).

Users who are driving with the main headlights as additional daytime running lights should set the dimmer mode setting to “Night”. Alternatively, the display setting mode can also be assigned to the ALT button – for faster manual adjustment.