Method of resetting a central lock system of a motor vehicle hav

Details Method of resetting a central lock system of a motor vehicle hav Method of resetting a central lock system of a motor vehicle hav

1996-08-01

1998-01-27

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 104, 307 105, 364424037, 36442404, 180287, 34082569, G06F 1700

Patent

active

057125120

ABSTRACT:
A method of resetting a central lock system of a motor vehicle automobile connects a diagnostic device to a fixed part of the system. When the central unit is switched to the "SETUP" mode, the key of a new portable unit is inserted into a key-operated switch to interrogate a transponder of the portable unit, a transponder querying transceiver of the fixed unit to derive a key-identification code word which is stored in the transponder and in a memory of the transceiver. The transmitter is then operated to send a remote-control changing code word which progressively changes in the transmitter, to the receiver. The latter picks up the then-effective remote-control changing code word and stores it in the transceiver and transponder code word storage memories as a new transponder changing code word. The fixed unit is then switched back to its "NORMAL" mode.

REFERENCES:
patent: 4942393 (1990-07-01), Waraksa et al.
patent: 5049867 (1991-09-01), Stouffer
patent: 5513107 (1996-04-01), Gormley
patent: 5523948 (1996-06-01), Adrain
patent: 5561420 (1996-10-01), Kleefeldt et al.
patent: 5583383 (1996-12-01), Denz

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