Volvo XC90 Quick Manual page 4

01
BUTTONS ON THE REMOTE KEY
Press to lock the doors and tailgate and arm the alarm.
Press to unlock the doors and tailgate and disarm the alarm.
Press briefly to unlock and disarm the alarm on the tailgate.
Press and hold to open or close the power tailgate*.
"Panic" alarm: Press and hold for at least 3 seconds or press
twice within 3 seconds to sound the horn and flash the turn
signals. Press the same button to turn off the function (it will
deactivate automatically after approx. 3 minutes).