Hello.
I recently bought a used 2014 Mazda Mazda3 sedan.
When I bought it, I was sure to double or even triple check everything before I did.
but yesterday, the touchscreen display for my radio and GPS won't turn on anymore when I start the car. I fiddled with the settings and looked around for an on/off switch to see if I accidentally turned it off or something, but no luck. Does anyone else have any idea?

 

Check your audio 1 & audio 2 fuses. Otherwise it should still be under warranty.