I recently purchased the '04 Nissan Murano from a used car dealership. My car went into lockdown mode once I parked and turned it off. I called Nissan and they couldn't help me because the options they were giving me to disarm the theft system from the lock buttons and drivers side keyhole was somehow turning my engine on but of course it would just crank followed by the alarm going off. They said I must have an after market alarm system which must be triggering the car to go into lockdown mode. I had someone come out and look at it. He took out all the wiring for the after market alarm system. He removed the negative cable from the battery in hopes it would somehow reset everything but once he replaced it, nothing. I have no idea how to get this car up and moving what so ever. Does anyone know what we're doing wrong?