"Key Not Detected" message in cluster and can't start vehicle in 2015+ Ford Mustang, after installing Sync 3 upgrade

"Key Not Detected" message in cluster and can't start vehicle in 2015+ Ford Mustang, after installing Sync 3 upgrade

All Mustangs 2015 year or newer are push to starts. The main antenna for the push to start is located in the center console. You'll run into this symptom if you unplug that antenna and don't return it before finishing installation.
    • Related Articles

    • "Radio Locked Please Start Vehicle"

      "Radio Locked Please Start Vehicle" If you are receiving this message, then you have either a Chrysler 200, Jeep Cherokee, Jeep Renegade or a Jeep Compass. These two vehicles use a Fiat based computer system and will need to have the vehicle's ...
    • Ford Explorer Steering wheel Mode Button not working after 4" to 8" Sync 3 Upgrade

      After installing the 8.4" Sync 3 upgrade radio, you may notice that your Mode button on your steering wheel no longer functions, this is due to the radio screen size being tied to the steering wheel configuration. There's a 4-inch Configuration: And ...
    • Ford Mustang 4" to 8" Sync 3 Upgrade: "I'M MISSING CABLES FROM MY KIT"

      If you've purchased the Ford Mustang 4" to 8" Sync 3 upgrade and watched our installation video you may see that there are two small cables that are mentioned and is missing from your kit. We are sorry for the confusion, but we've improved our kit to ...
    • Sync 3 Upgrade: GPS Isn't Accurate

      If your GPS location isn't accurate when viewing the navigation, your instrument cluster will switch between two directions (N & S), and possibly showing you driving relatively close, but may be haywire at times, please see below: This is a cluster ...
    • Sync 3 upgrade gives Navigation Fault

      This issue arrives if the Sync 3 upgrade doesn't have our infotainment GPS antenna plugged in upon start-up: To resolve this, always plug in the GPS antenna we supplied you BEFORE turning on the unit/vehicle.