Abstract: In an example of a method for performing vehicle antenna diagnostics, a transmitting and receiving (TX/RX) antenna of a multiple input multiple output (MIMO) antenna assembly of a vehicle is electronically caused to emit a check signal. A response of a receiving only (RX) antenna of the MIMO antenna assembly is electronically detected in response to the check signal. A received signal strength indictor output is generated in response to the response of the RX antenna. The received signal strength indictor output is converted to a digital signal. The integrity of the MIMO antenna is determined after comparing the digital signal with an expected power level of the RX antenna.

Abstract: In an example of a method for performing vehicle antenna diagnostics, a transmitting and receiving (TX/RX) antenna of a multiple input multiple output (MIMO) antenna assembly of a vehicle is electronically caused to emit a check signal. A response of a receiving only (RX) antenna of the MIMO antenna assembly is electronically detected in response to the check signal. A received signal strength indictor output is generated in response to the response of the RX antenna. The received signal strength indictor output is converted to a digital signal. The integrity of the MIMO antenna is determined after comparing the digital signal with an expected power level of the RX antenna.

Abstract: A system and method of diagnosing wireless key fob interference includes: detecting, at the vehicle, the presence of a wireless signal in a key fob frequency range; determining at least one characteristic of the detected wireless signal that prevents a vehicle user from controlling the vehicle using a wireless key fob; and determining whether interference exists.

Abstract: A system for preventing a relay attack on a vehicle is provided. The system includes a base unit positioned in the vehicle and operably connected to at least one vehicle system. The base unit is configured to obtain position information of the base unit. The system further includes a portable operating unit configured to obtain and transmit position information of the portable operating unit to the base unit. The base unit determines the position of the portable operating unit relative to the base unit and selectively controls operation of the at least one vehicle system based on the determination of the position of the portable operating system relative to the base unit.

Abstract: A method for authenticating a request for access comprises monitoring one or more ambient transmissions present in a local environment, analyzing the one or more ambient transmissions to create a characterization thereof, and transmitting information configured to instruct a security token regarding characteristics of an adapted transmission protocol based on the characterization. The adapted transmission protocol is configured for decreasing a likelihood of interference by the one or more ambient transmissions with reception of an authentication transmission from the security token. An authentication transmission comprising authentication information is received from the security token, and the security token is authenticated based on the authentication information. In response to a request for access, a signal is transmitted to a controller indicating the request is authentic.

Abstract: A method for authenticating a request for access comprises monitoring one or more ambient transmissions present in a local environment, analyzing the one or more ambient transmissions to create a characterization thereof, and transmitting information configured to instruct a security token regarding characteristics of an adapted transmission protocol based on the characterization. The adapted transmission protocol is configured for decreasing a likelihood of interference by the one or more ambient transmissions with reception of an authentication transmission from the security token. An authentication transmission comprising authentication information is received from the security token, and the security token is authenticated based on the authentication information. In response to a request for access, a signal is transmitted to a controller indicating the request is authentic.

Abstract: A method and system are disclosed for operating a controller of and a RKE system to provide for short distance functions that are actuatable from a key fob at a shorter distance from the vehicle than other long distance functions. This may include receiving a desired type of radio frequency signal; actuating a high gain mode of a receiver of the controller; detecting a message from an acceptable remote keyless entry transmitter; decoding a function code portion of the message; changing the receiver from the high gain mode to a lower gain mode if the function code is not a long distance function; decoding a remaining portion of the message; determining if the remaining portion of the message was decoded properly; and performing the requested function if the remaining portion of the message was decoded properly.

Abstract: The present invention concerns a method for verifying a command in a vehicle remote communication system. The remote communication system includes a remote transmitter, and a vehicle body having a receiver module and a control module connected by a communication bus disposed therein. The control module is in communication with at least one vehicle system. The remote transmitter transmits an activation signal that is received and decoded by the receiver module. The receiver module transmits a first message along the communication bus that is received by the control module. The control module transmits an acknowledgment message that is received by the receiver module. The receiver module re-transmits the first message that is received by the control module. The control module then initializes a vehicle system command to the vehicle system, thereby preventing an inadvertent activation of the vehicle system.

Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.

Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.

Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.

Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.