Just found something new in my car. Atleast for me its new.
When driving in night, meter lights are dimmed when you turn on the parkng or head lights. Some people dont like them dimmed. When tge lights are dimmed, press the button to show the odo meter. Not trip a or b. Now press the button for few seconds and the light will change from dim to full. It's just like the way you reset trip a or b but in this case, you reset the odo total reading. Instead of resetting it, it lets you choose if you want dim ligjts or full.