I have tried to adjust the brightness of the multi-information display per the Lexus manual. I will place the key in the ACC or On position , hold down the MODE button for 2 seconds. I will see the ILL appear on the display. I will push the Up Black Arrow to increase the brightness. The manual states you can adjust the brightness to 3 levels when the tail lights are off. I will start the pressing the up arrow and go from a black screen to brightness but I can only get to ILL 2.Should I be able see ILL3? Also, I have never been able to adjust to 6 levels with the tail light are on.

Any suggestion or assistance is warmly welcomed.