Buick LaCrosse: Dual Tone Multi-Frequency 
(DTMF) Tones - Bluetooth (Infotainment Controls) - Phone - Infotainment System - Buick LaCrosse Owners ManualBuick LaCrosse: Dual Tone Multi-Frequency (DTMF) Tones

The in-vehicle Bluetooth system can send numbers during a call. This is used when calling a menu-driven phone system.

1. Turn the Menu knob to select Enter Number, then press SELECT.

2. Enter the character sequence.

See “Entering a Character Sequence” in Operation for more information.

    Muting a Call
    To Mute a Call Turn the Menu knob to select Mute Call, then press SELECT. To Cancel Mute Turn the Menu knob to select Mute Call, then press SELECT. ...

    See also:

    Indicator symbols on the instrument cluster
    ...

    Operation Using Advanced Keyless Functions
    Operational Range The system operates only when the driver is in the vehicle or within operational range while the advanced key is being carried. NOTE: When the battery power is low, or in places ...

    Tire damage
    General information Inspect your tires often for damage, foreign objects lodged in the tread, and tread wear. Notes Driving over rough or damaged road surfaces, as well as debris, curbs and oth ...