Buying AP FOR 3k for my model 3

[FlashEV0625]

If I purchase the auto pilot for $3000 online right now how long until I can use it in my model 3?

 

[HelixSpiral]

Tesla officially says up to three days. When I added it to mine last month, I did it while sitting in the car parked using my phone. It took about ten seconds for it show up in the car.