so does that mean, if I change my nav computer, i will probably need to code the TV in mortion again?

if my old TV module was coded with TV in motion, when i install it in a new car, the TV in motion would be disabled?

No. Please read my previous post again. I stated very clearly that the TV settings are stored in the TV module (video module)

You only need to recode the TV if you change the video module

Changing the nav unit has NO IMPACT on the video module

If you take out the video module and fit to a new car, the video module will behave the same in the new car as it did in the old car. ie: if it was enabled for TV in motion, it will remain enabled in the new car.