See also:

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

Customer Assistance Offices
Buick encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Buick, the letter should be addressed to: United States — Customer Assist ...

RKE without Remote Start Shown
(Unlock): Press to unlock the driver door or all doors. See “Auto Door Unlock” under Vehicle Personalization . The turn signal indicators may flash and/or the horn may sound to indicate unlo ...