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:

    Clock
    The infotainment system controls are used to access the time and date settings through the menu system. See Operation  for information about how to use the menu system. Setting the Time and Date ...

    Air distribution table
    ...

    Towing Your Vehicle
    Your vehicle is not designed to be towed behind a motor home. If your vehicle needs to be towed in an emergency. ...