See also:

Horn
Press on the steering wheel pad to sound the horn. ...

Perimeter Lights
Press the customization button until PERIMETER LIGHTS: ON appears in the display. To select your preference for perimeter lighting, press the select button while PERIMETER LIGHTS: ON is displaye ...

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 ...