Mazda CX-9 2019 Owner's Manual page 381

There are 4 settings which can be adjusted including, brightness, contrast, tint, and color.
When adjusting, pay sufficient attention to the vehicle surroundings.
1. Select the icon on the screen to display the tabs.
2. Select the desired tab item.
3. Adjust the brightness, contrast, tint, and color using the slider.
If you need to reset, press the reset button.
4. Select the icon on the screen to close the tab.
When Driving
Rear View Monitor
4-221