I added a new head unit to my 13 year old Santa Fe, it is like a new car now, wireless Android Auto. Connects quick, bigger nicer screen. Should allow me to keep the car for another 10 years assuming I don't blow up another engine, only the first one is free.
Updating the infotainment head unit on most newer vehicles is effectively impossible due to the way they're tightly integrated into the rest of the vehicle's systems and controls.
