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:

Customer Assistance for Text Telephone (TTY) Users
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 can co ...

COOLANT LEVEL LOW ADD COOLANT
This message will display if the coolant is low. See Engine Coolant. ...

Ultrasonic Parking Assist
For vehicles with the Ultrasonic Rear Parking Assist (URPA) system, it assists the driver with parking and avoiding objects while in R (Reverse). URPA operates at speeds less than 8 km/h (5 mph), and ...