I have a Viper 560xv, sometimes the system will not unlock the doors .. have to use the key. Will be ok for a day then once again no unlock. It will disarm the system but won't unlock. I took to factory remote to have it on me when viper failed to unlock ....... factory remote worked to unlock.
I was going to buy the same module and plug it in ....... but does anyone know of a newer model that uses the same wiring as the 560xv so I could just plug it in.