If your vehicle has a backup alarm, you will hear the alarm go off. You'll need to reconnect the battery and repeat Steps 1 and 2 to disable the alarm system. You may also need to insert. How to Remove a Nissan Titan ECU · How to Disable a
I just bought a used car and it has a Viper System installed. When I use the fob to unlock the car, and then open a door, the alarm goes off (and I have no idea .