Key Turns but Vehicle Won't Start

DIAGNOSE KEY & FOB PROBLEMS

Is a security/key/immobilizer warning flashing or staying on abnormally?

Safety and accuracy: This tool is for low-risk troubleshooting and preparation. Do not force locks/ignitions, bypass vehicle security, or order a replacement solely from appearance. Verify the owner manual, VIN, FCC ID, part number and exact vehicle application when relevant.