The electronics seem to have a shorter warranty than the rest of the car. They tried to sell me an extended warranty for the electronics when I bought the car.
The following components are covered for time and mileage limits indicated:
Radio and audio systems (i.e., radio, compact disc player, DVD player, navigation system and Bluetooth®): for MY 15 and prior, 3 years/36,000 miles—Equus: 5 years/60,000 miles