I have a 2017 CX 9 GT, which we love. The other day the Nav failed to load and it said our car wasn't equipped with a Nav chip, but we obviously had one. I turned the car off, and removed the chip. After a few minutes I re-inserted the chip and started the car. The infotainment system said our chip was invalid. Took it to the dealership and they said the chip was bad and replaced it with a new one under warranty.