FORD 2015 Fiesta - Manual (Page 63)

Vehicles with Keyless Entry
Note: A valid passive key must be located
within the detection range of that door for
keyless entry. See Keyless Entry (page 55).
Disarm and silence the alarm by unlocking
the doors and switching the ignition on or
unlocking the doors with the remote
control.
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Fiesta (CCT), enUSA, Second Printing
Security