2003 Buick Rendezvous Owner's Manual - Page 172

If the sun comes out or it becomes cloudy, you may need to adjust the HUD brightness again using the dimmer knob. Polarized sunglasses could make the HUD image harder to see. When you first start the vehicle the display will show BUICK and the h i c k logo for a few seconds. If it is cold outside, this display may stay on for up to a minute. Clean the inside of the windshield as needed to remove any dirt or film that reduces the sharpness or clarity of the HUD image. To clean the HUD, spray household glass cleaner on a soft, clean cloth. Wipe the HUD lens gently, then dry it. Do not spray cleaner directly on the lens because the cleaner could leak into the unit. If the ignition is on and you can't see the HUD image, check to see if one of the following conditions exist: 0 0 0 0 The HUD unit is covered, the HUD dimmer knob is adjusted incorrectly, the HUD image is not adjusted to the proper height, ambient light (in the direction your vehicle is facing) is low, or a fuse is blown. See Fuses and Circuit Breakers on page 5-96. If you ever have to have your windshield replaced, be sure to get one that is designed for the HUD or your HUD image may look blurred and out of focus. 3-21