Default [Q] How to disable Google voice search

OK, hi all

I have a goofy problem.
I drive 2 cars, alternate them every other day.
One of them is Camry Hybrid. I stream music via AUX cable off ITune radio.
Problem is, ONLY in this car, every time I plug AUX cable in and turn ITune on, Google Voice search pops up. It became a pest, as it pops up every time I touch AUX cable in the phone or even move the phone. I made perfectly sure fingers do not touch the screen or any buttons, it still does it. I have to shut it down about 5-6 times in a row, before it stops popping. Have none of this issue with the other vehicle.
I never use this pgm and could care less about it.
How do I delete it or shut it down permanently? Can't find any settings to do so and can't locate in TiBUP to delete, or even in apps manager in settings.

Thank you.