2010 Buick LaCrosse Owner's Manual - Page 118

4-32 Instruments and Controls The HUD image can temporarily light up depending on the angle and position of the sunlight on the HUD display. This is normal and will change when the angle of the sunlight on the HUD display changes. Polarized sunglasses could make the HUD image harder to see. All navigation information is provided to the HUD by the navigation radio or OnStar® service, for vehicles that have these features. If You Cannot See the HUD Image When the Ignition Is On . Is anything covering the HUD lens? Is the HUD dimmer setting bright enough? Is the HUD image adjusted to the proper height? Are you wearing polarized sunglasses? Still no HUD image? Check the fuse in the instrument panel fuse block. See Instrument Panel Fuse Block on page 9‑44. Is the HUD image too bright? Are the windshield and HUD lens clean? . . Care of the HUD Clean the inside of the windshield as needed to remove any dirt or film that could reduce the sharpness or clarity of the HUD image. To clean the HUD lens, use a soft, clean cloth that has household glass cleaner sprayed on it. 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 HUD Image Is Not Clear . . The HUD image displayed on the windshield will automatically dim and brighten to compensate for outside lighting. However, the HUD brightness control can still be adjusted as needed. If the HUD image is not correct, contact your dealer/retailer. Keep in mind that the windshield is part of the HUD system.