Johnonce

Hi All, Recently picked up a RX450h 2016 but cannot get the Siri going on the infotainment system. Supposedly you should be able to just hold down the off hook button on the steering wheel and you should be able to give a command to Siri via the infotainment system. When I try to do this all I get is a short beep sound and nothing happens. Would appreciate peoples input on this Thanks! John