2006 Cadillac STS Owner's Manual - Page 186

The HUD controls are located to the left of the steering wheel on the DIC control panel. To adjust the HUD so you can see it properly, do the following: 1. Adjust the seat to a comfortable driving position. If you change your seat position later, you may have to re-adjust your HUD. 2. Start your engine and press the top or bottom of the HUD button to center the HUD image in your view. The HUD image can only be adjusted up and down, not side-to-side. 3. Turn the knob on the DIC control panel to adjust the brightness of the HUD image. ~ (Head-Up Display): Press this button to change the position of the HUD on the windshield. Press the top part of the button to move the HUD image up. Press the bottom part of the button to move the HUD image down. You can also adjust the brightness of the HUD image. Press the knob on the center of the DIC control panel in until it pops out and then pull the knob until is completely extended. Turn the knob clockwise or counter-clockwise to increase or decrease the brightness. If you turn the knob all the way to the left, the HUD image will turn off. The brightness of the HUD image is determined by the light conditions in the direction your vehicle is facing and where you have the HUD set. If you are facing a dark object or a heavily shaded area, your HUD may anticipate that you are entering a dark area and may begin to dim. To turn the HUD image off, turn the knob counter-clockwise. Polarized sunglasses could make the HUD image harder to see. 3-42