Siri Does Not Work on 2016 XJ L Bluetooth

[Bobd21]

I just purchased a new 2016 XJ L with the newer infotainment system. I'm finding that I cannot talk to Siri over bluetooth. This is the case with both my phone and my wife's iPhone (6s and 6s+ with the latest iOS 9).

When I'm in the car I can make and receive calls and stream music. But when I long-press the home button or wake up the phone with "Hey Siri", audio to and from the phone is completely dead. I don't hear the tone Siri makes when it wakes up, and the voice input wave graphic stays flatlined when I try to talk to it. It seems like audio is being routed to the car system because I can't use the phone's own speaker/mic to interact with Siri, but the car is not doing the right thing with it.

This works as expected on other cars. It looks like the new Pro infotainment system screwed something up.

Anyone have any insight or experiences to share?  Is there is a fix, work around, or software update that can be applied?