Method for resetting a central lock system of a motor vehicle with a remote actuating device

US5798576A · kind A · utility

Assignee

• Kiekert AG · DE

Inventors

• Wilfried Ostermann · Essen, DE
• Fred Welskopf · Herne, DE

Key dates

• Filing date: Aug 9, 1996
• Grant date: Aug 25, 1998
• Expiry date: Aug 9, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C2009/00873
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A central-locking system is reset upon loss of a portable remote-control unit and replacement by another in a system in which a diagnostic device is temporarily connected and switched to the stationary part of the locking system into a "SETUP" mode. The key is then inserted into a key-operated switch to interrogate the transponder with the transceiver and from the latter the key-identification code word stored in the transponder and the transponder initial code word are transferred. The key-identification code word and transponder initial code word are stored in a code-word memory and the transmitter is then operated to send a remote-control changing code word to the receiver and enables switching back to the "NORMAL" mode of operation and removal of the diagnostic device.