2nd car remote programming viper 5901

I have a 2002 Dode Ram with a viper 5901 installed. Everything works wonderfully. According to the options of the LCD 7752v remote, it says that I am able to program another vehicle to the remote. I can pull up the menu on the remote, but it will not allow me to choose car 2 because I don't have another vehicle programmed yet. I am planning on installing the same 5901 module in my girlfriends car for Christmas, and was wondering if anyone could offer some information on how i can add my transmitter to her vehicle as car 2. Thanks for your time. -Kyle

press and hold the F side button for 8-13 seconds, use the rem start or aux button to scroll through the menu until you see remote programming, press F to select, now scroll until you see Car 2, press F again to select, change setting to ON, exit the menu (just scroll until you see back or exit, and use F to select). now you can press and hold F for a few seconds until car 2 comes up, press F again to toggle between the two cars. When you're in car 2, that's when you program it to her car as you would a normal transmitter.MECP Master Certified Technician

ASE A6 Certified Technician