Abstract: A method for authenticating a vehicle reservation by a user using a telematics authentication system includes opening a telematics authentication system application in a mobile device. A reservation for a vehicle is created via the telematics authentication system application including selecting the vehicle from multiple identified vehicles and identifying a reservation start date. The reservation is wirelessly submitted to a remotely located server. The server creates and downloads a valid certificate for the reservation to the vehicle. The vehicle sends a secret key to the mobile device after which the telematics authentication system application is closed. On the reservation start date the mobile device and the vehicle are positioned within a predefined wireless connection range and the telematics authentication system application is reopened in the mobile device to permit wireless authentication of the secret key for operation of the vehicle.

Abstract: A method of operating a passive entry passive start (PEPS) system includes authenticating the mobile wireless device, detecting a presence of the mobile wireless device in a specified location in an interior of the vehicle, and calibrating one or more operating parameters of the PEPS system based on radio frequency (RF) performance characteristics of the mobile wireless device.

Abstract: A method of operating a passive entry passive start (PEPS) system includes authenticating the mobile wireless device, detecting a presence of the mobile wireless device in a specified location in an interior of the vehicle, and calibrating one or more operating parameters of the PEPS system based on radio frequency (RF) performance characteristics of the mobile wireless device.