Ignition relay clicks but car wont turn over but then works a few days later

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Mystery no-starts are no fun and can leave you stranded! The symptoms suggest a potential issue with the ignition system or, the vehicle's anti-theft system or maybe as simple as a failing starter. The single clicking noise in the rear fuse box could indicate a problem with the ignition relay or a loose connection or damaged wiring. Additionally, the "Service Theft System" light on the display suggests a possible issue with the vehicle's anti-theft system, which could be preventing the car from starting. Having a professional mechanic hunt this issue down is a good idea simply because these kinds of weird mystery no-starts can become pretty hairy. If you have any other questions feel free to call us at 877-913-1554! We'll gladly find you a certified RepairPal shop in your area!