Vehicle anti-theft system using second key means
First Claim
1. A vehicle anti-theft system, comprising first mechanical key means including a first key switch which is adapted to be operated by a first mechanical key, first electronic key means including a signal receiver which is adapted to be operated by a first electronic key;
- and a control unit for allowing a motor vehicle to be operated when both said first mechanical key means and said first electronic key means are operated by said first mechanical key and said first electronic key, respectively, further comprising;
second key means which is adapted to be operated by a second key, said control unit allowing said motor vehicle to be operated even when said first electronic key has become unable to function normally only if said first mechanical key means is operated by said first mechanical key and said second key means is operated by said second key.
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Accused Products
Abstract
A vehicle anti-theft system, comprising a mechanical key unit, an electronic key unit, and a control unit allowing operation of a motor vehicle only when both the mechanical key unit and the electronic key unit are operataed by a mechanical key and a keyboard, respectively. To permit operation of the motor vehicle even when the second electronic key unit has become unable to operate normally, there is provided a second electronic or mechanical key unit which can be operated manually or by means of the mechanical key. To discourage unauthorized operation of the motor vehicle, the second key unit requires entry of coded data or insertion of a mechanical key into a key switch provided in a poorly accessible part of the vehicle body. In this way, an authorized person can operate the motor vehicle even when the electronic key unit is unable to function normally without increasing the risk of an unauthorized person operating the motor vehicle.
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Citations
12 Claims
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1. A vehicle anti-theft system, comprising first mechanical key means including a first key switch which is adapted to be operated by a first mechanical key, first electronic key means including a signal receiver which is adapted to be operated by a first electronic key;
- and a control unit for allowing a motor vehicle to be operated when both said first mechanical key means and said first electronic key means are operated by said first mechanical key and said first electronic key, respectively, further comprising;
second key means which is adapted to be operated by a second key, said control unit allowing said motor vehicle to be operated even when said first electronic key has become unable to function normally only if said first mechanical key means is operated by said first mechanical key and said second key means is operated by said second key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- and a control unit for allowing a motor vehicle to be operated when both said first mechanical key means and said first electronic key means are operated by said first mechanical key and said first electronic key, respectively, further comprising;
Specification