If I have more than phone paired to my TSX...which phone is the default if my wife and I are both in the car...or will it work with both at the same time?

 

My experience is, both. Not sure if you can use both at the same time. If that's what you are asking.

 

The phone that has a faster time acquiring the Bluetooth signal will be the phone that is paired. Really depends on the phone at the time of pairing.

My wife has a Blackberry Bold and I have an iPhone 3GS and either one could be paired when we get in the car ... it's a bit annoying that was actually.

To find out which phone is paired, hit the HFL button and say:

"Phone Setup Options"
"Phone Status"

Car will say which phone is synced

To switch which phone is paired, say:

"Phone Setup Options" (this is optional, depending on where you are in the menu)
"Next Phone"