Review on 🔑 Dorman 99159 Keyless Entry Remote: 4 Button Compatible with Infiniti/Nissan Models (OE FIX) by George Saunier

I have programmed my Altima so that there is a second key for my car. I looked at the information several times to clearly understand what I need to do and how the machine will react. When I got to step 9 after waiting 10 seconds and pressing the start/stop button to turn it off, the programmer only beeped once instead of three. I waited another 10 seconds and pushed the start/stop button, but the car's red light didn't flash. This stopped the process. Now my original prox is useless. I disconnected the battery overnight, no change. What should I do to solve this problem?