It looks like the new Model 3 and Model Y may be getting a secondary display soon. In a recent tweet from @greentheonly, it was discovered that new Model 3 and Model Y models with AMD processors have the capacities for a second display.
Connectors on the circuit board of the AMD powered Model 3/Y show that it has a connector to power a "2nd display". It is possible that the second display will be in the back of the car like the new Model S and Model X.
New Model 3 and Model Y vehicles have a circuit board that’s similar to the ones in the Model S and Model X, but they’re not the same, so this isn’t just the case of Tesla sharing parts between the two cars and letting the 2nd display port go unused.
According to Green, a similar situation occurred before, where the Model Y PCB had unused USB3 ports which were then populated in later revisions.
It’s possible that Tesla will add a rear display to the Model 3 and Model Y because it becomes a big selling point for Tesla.
The rear display gives you convenient features such as the ability to turn on rear seat heaters, and adjust the cabin temperature. It also allows you to manage music in the vehicle as well as some additional entertainment options such as play games and stream movies from Netflix, Disney+ and more.
And while games and movies on the vehicle’s main screen can only be used while parked, on the rear display your passengers are welcome to watch movies on the way to their destination.
This is a compelling feature and it’d actually cost Tesla little to add since the 8” display is powered by the same hardware as the center display.
Alternatively, it is possible, but unlikely that the second connector will be used for an instrument cluster display including speedometer, temperature, GPS, and battery information behind the steering wheel.
Looks like model 3/Y is getting a second display soon?
— green (@greentheonly) April 16, 2022
I just took a closer look at an AMD based model 3/y car thanks to some enterprising people
And there are two unpopulated connectors near display, one of them is marked "2nd display".
EPC has it populated - looks like s/x pic.twitter.com/99ESydFShV

