What is the most efficient way to program the keyless entry feature on a 2021 Audi A3?

I recently purchased a 2021 Audi A3 and I am having trouble programming the keyless entry feature. I have tried following the instructions in the manual, but it doesn't seem to be working. Any advice on the most efficient way to program this feature?

The keyless entry feature on the 2021 Audi A3 can be tricky to program, but don't worry, you're not the only one experiencing difficulties! Here's what worked for me: First, make sure your car is in a safe and open area, away from any other vehicles that may have similar keyless systems. Then, put the key into the ignition and turn it to the 'on' position without starting the car. Within 10 seconds, press and hold the lock button on your keyless remote for at least 5 seconds. Repeat this process for each additional key you have. If this doesn't work, try resetting the keyless entry system by disconnecting the battery for a few minutes and then reconnecting it.