2007 Buick Rainier Owner's Manual - Page 127

To adjust for compass variance, do the following: 1. Find your current location and variance zone number on the following zone map. 3. Scroll through the zone numbers that appear in the window on the mirror by pressing the on/off button. Once you find your zone number, release the button. After about four seconds, the mirror will return to the compass display, and the new zone number will be set. Outside Power Mirror The outside power mirror control is located on the driver's door. 2. Press and hold the on/off button for six seconds. Release the button when (FOR ZONE) is displayed. The number shown is the current zone number. 1. Turn the knob toward the mirror you desire to adjust. 2. Move the control in the direction you want the mirror to go. 127