PHONE AS A KEY VEHICLE ACCESS BASED ON TIME POLICIES, LICENSE INFORMATION AND VALIDATION AND ACCURACY OF A VEHICLE REAL TIME CLOCK

摘要

Systems and methods for an in-vehicle device for a phone as a key (PAK) system of a vehicle (108, 200) are provided. The in-vehicle device includes a control module (204) that determines an age of a latest obtained certificate, including license information, and determines whether the latest certificate is outdated. If the latest certificate is outdated, the control module transmits an instruction signal from the vehicle to a mobile device (102) to obtain an updated certificate. If the certificate is not outdated, the control module determines whether the license information is accurate. Based on whether the license information is accurate, the control module determines an accuracy level of the local time or the date. Based on the accuracy level, the control module adjusts an access tolerance time, permits the user to access the vehicle, or transmits the instruction signal from the vehicle to the mobile device to obtain the updated certificate.