System for Enabling The Functionality Of A Sequence Control System Stored In A Controller Of A Motor Vehicle

• US 20090134989A1
• Filed: 11/21/2008
• Published: 05/28/2009
• Est. Priority Date: 11/24/2007
• Status: Active Grant

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Lindlbauer, Marc, Wagenhuber, Josef, Schellenberg, Hanno, Kuhls, Burkhard
• Granted Patent: US 8,319,622 B2
• Time in Patent Office: Days
• US Class Current: 340/439
• CPC Class Codes: G07C 2009/00412 the transmitted data signal being encrypted
• CPC Class Codes: G07C 2009/005 whereby the code is a random code
• CPC Class Codes: G07C 9/28 the pass enabling tracking or indicating presence

Abstract

A central check device is provided in a motor vehicle, to which device an enable message emitted by a first controller inside the vehicle or from a location outside the vehicle is supplied via a communication bus of the motor vehicle. The central check device evaluates the received enable message to identify the sequence control system to be enabled and the controller which comprises the sequence control system to be enabled. The central check device sends an enable command to the identified controller via the communication bus of the motor vehicle so as to enable the sequence control system which is to be enabled.

Claims

1. A system for enabling the functionality of a sequence control system stored in a controller of a motor vehicle, the system comprising:

a central check device in the motor vehicle;

an enable message emitted by a first controller inside the vehicle or from a location outside the vehicle being supplied via a communication bus of the motor vehicle to the central check device;

an evaluator in the central check device which evaluates the received enable message to identify the sequence control system to be enabled and the controller which comprises the sequence control system to be enabled; and

,

an enable command sent by the central check device to the identified controller via the motor vehicle communication bus to enable the sequence control system which is to be enabled.

2. The system according to claim 1, wherein the received enable command is encrypted with the private key of the first controller or of an enable location outside the vehicle.

3. The system according to claim 2, wherein the received enable command is decrypted using a complementary public key provided in the central check device so as to identify the sequence control system to be enabled and the controller.

4. The system according to claim 1 wherein the enable command comprises a diagnostic address of the relevant controller and the relevant controller is identified on the basis of the diagnostic address.

5. A method of enabling the functionality of a sequence control system stored in a controller of a motor vehicle, the system comprising:

emitting an enable message from a first controller inside the vehicle or from a location outside the vehicle onto a communication bus of the motor vehicle to a central check device;

evaluating the received enable message to identify the sequence control system to be enabled and the controller which comprises the sequence control system to be enabled; and

,

sending an enable command from the central check device to the identified controller via the motor vehicle communication bus to enable the sequence control system.

6. The method according to claim 5, wherein the received enable message is encrypted with the private key of the first controller or of an enable location outside the vehicle

7. The method according to claim 6, wherein the received enable message is decrypted using a complementary public key provided in the central check device so as to identify the sequence control system to be enabled and the controller.

8. The method according to claim 5 wherein the enable message comprises a diagnostic address of the relevant controller and the relevant controller is identified on the basis of the diagnostic address.