Latch operating system and instruction method

摘要

A user is authorized to enter a side door in a vehicle having a rear closure by a method including: providing a door latch having an electric actuator energizable to unlatch the door latch; providing a rear closure latch that is unlatched by either a key operated lock cylinder or energization of an electrical actuator; providing a fob for transmitting a first radio signal indicating that a user is authorized to unlatch the door latch and a second radio signal energizing the rear closure latch; monitoring the transmission of the radio signals; monitoring the status of the closure latch to determine that the closure latch has been unlatched; and if the closure latch has been unlatched without the transmission of the second radio signal, calculating that the key was used, the user is authorized; and operating the door latch to permit user entry through the side door.

主权项

1. A method for authorizing a user to enter a side door in a vehicle having a rear closure, comprising:
providing the side door with a side door latch; providing the rear closure with a rear closure latch operable by a key operated lock cylinder; providing a wireless fob for transmitting a first radio signal indicating that a user is authorized to unlatch the side door latch and a second radio signal indicating that a user is authorized to unlatch the rear closure latch; monitoring the rear closure latch to determine whether the rear closure latch has been unlatched; and if the rear closure latch has been unlatched without the transmission of the second radio signal, then calculating that the key was used and the user must therefore be authorized to enter the vehicle; and permitting the user entry through the side door without transmission of the first radio signal.