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Home >> Ford >> 2016 >> Fiesta S, 4D Hatchback, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Passive Anti-Theft System (Pats) - Vehicles With: Keyless Entry And Push Button Start >> Description And Operation >> Passive Anti-Theft System (PATS) - System Operation and Component Description >> System Operation >> Key Not Detected Message
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Key Not Detected Message

NOTE: Some brands/types of mobile phone or laptop computer chargers may cause interference that could lead to a PATS concern if the passive key is within close proximity of the charger. If a concern is observed, move the passive key away from the charger and attempt to turn the ignition on.

There are 2 scenarios in which the No Key Detected message displays in the message center.

The first is when the ignition is off, the START/STOP button is pressed and a programmed passive key is not detected inside the vehicle. If a component failure (such as a dead passive key battery) is causing the No Key Detected message to display, the backup starting method can be used.

The second scenario is when the vehicle is running, the driver exits the vehicle with the programmed passive key and closes the door.

The RFA module activates the 3 PATS antennas to search the inside of the vehicle for a passive key any time a door or the liftgate/luggage compartment lid is opened and then closed with the vehicle running and the first time each drive cycle the vehicle speed exceeds 15 kp/h (9 mph). The No Key Detected message displays in the message center and the horn chirps twice when the ignition is on and a passive key is no longer detected inside the vehicle.

This strategy deters the passive key from being separated from an already running vehicle. If a passive key is no longer in the vehicle, the ignition remains on and the vehicle continues to operate. When the START/STOP button is pressed to turn the ignition off, the ignition can be restarted without a passive key present inside the vehicle for approximately 20 seconds. After 20 seconds have elapsed, a passive key must be present to transition the ignition out of off.