Ford Fiesta Owner's Handbook Manual page 29

If the airbag warning lamp illuminates or
flashes when you are driving, this indicates
a malfunction. See Warning lamps and
indicators (page 57). Remove the child
restraint and have the system checked
immediately.
Disabling the passenger airbag
A
E71312
A Disabled
B Enabled
Turn the switch to position A.
When you switch the ignition on, check
that the passenger airbag deactivation
warning lamp illuminates.
Enabling the passenger airbag
WARNING
Make sure that the passenger
airbag is enabled when you are not
using a child restraint on the front
passenger seat.
Turn the switch to position B.
Occupant protection
B
27