ANTI-THEFT SYSTEM AND METHOD FOR A VEHICLE

WIPO Patent Application WO/1996/030236

A1

Anti-theft system and method in which re-registration and deletion of a code is performed without using an exclusive tool. Modes are changed to a master key code registration mode when an ignition switch is switched from OFF to ON five times consecutively within T1 seconds after a master key having its code registered is inserted into a key cylinder, within the following T2 seconds an opening and closing operation of a door is repeated six times, and the ignition switch is switched off and then the key is removed from the key cylinder. When a master key, a new code of which is to be registered is then inserted into the key cylinder within T3 seconds after the master key having a code already registered is pulled out of the key cylinder, and the ignition switch is turned on within T4 seconds after the insertion of the master key into the key cylinder, an identification code to be registered is read out of a transponder, and after a lapse of T5 seconds the identification code so read out is registered in memory as a registration code.

IWAMOTO KOUJI (JP)
KONDO MOTOSHI (JP)
KAMIYA MASACHIKA (JP)
AKATSUKA TAKAO (JP)

PCT/JP1996/000824

October 03, 1996

March 28, 1996

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TOYOTA MOTOR CO LTD (JP)
IWAMOTO KOUJI (JP)
KONDO MOTOSHI (JP)
KAMIYA MASACHIKA (JP)
AKATSUKA TAKAO (JP)

B60R25/04; B60R25/23; E05B49/00; B60R25/24; G08B13/00; (IPC1-7): B60R25/04

JPH02164644A	1990-06-25
JPH0422366U	1992-02-25
JPH0438247A	1992-02-07
JPH0253654A	1990-02-22
JPH01237242A	1989-09-21
JPS5523277A	1980-02-19
JPH06298042A	1994-10-25
JPS6324066U	1988-02-17
JPS62248768A	1987-10-29
JPH01103462U	1989-07-12

See also references of EP 0816192A4

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