Eli5 How sat natv in your car trasmits data?

Question

You don’t pay for it and there is no sim card but yet somehow you see your car icon move on a map?

In: 0

Answer 1

There’s usually a SSD card or DVD in your car somewhere that has all the map data. The GPS is receive only. You can buy new map data every year. You may get 1-2 free years of updates when you buy the car.

if you have XM radio (still receiver only), some GPS units can receive traffic/accident data.