Automatic Dimming Rearview Mirrorwith Compass

Your vehicle may have an automatic-dimming rearview mirror with a compass.

on/off button for the (On/Off): This is the on/off button for the automatic dimming feature and compass.

See also:

Rainsense™ II Wipers
If the vehicle has this feature, the moisture sensor is mounted on the interior of the windshield beside the rearview mirror and is used to automatically operate the wipers. This system operates ...

Vehicle Personalization
The audio system controls are used to access the personalization menus for customizing vehicle features. CONFIG (Configuration): Press to access the Configuration Settings menu. Menu Knob: ...

Customer Assistance for Text Telephone (TTY) Users (U.S. and Canada)
To assist customers who are deaf, hard of hearing, or speech-impaired and who use Text Telephones (TTYs), Buick has TTY equipment available at its Customer Assistance Center. Any TTY user ca ...