Here is the instruction on how to program keys for FORD F250 550 Super Duty.
NOTE: Only fitted to models below 8500 lbs GVW.
A.System arms after switching ignition OFF.
B.Switch ignition ON.
C.Ensure system warning lamp illuminates for approximately 3 seconds.
D.If system warning lamp does not extinguish or flashes;
a. A system fault is indicated.
A.Keys added or replaced.
A.Obtain 2 programmed keys (A and B).
B.Insert key A into ignition switch.
C.Turn ignition switch ON. Wait 1 second.
D.Switch ignition OFF. Remove key A.
E.Within 5 seconds:
a. Insert key B into ignition switch.
F.Turn ignition switch ON. Wait 1 second.
G.Switch ignition OFF. Remove key B.
H.Within 10 seconds;
a.Insert key to be programmed into ignition switch.
I.Turn ignition switch ON. Wait 1 second.
J.Switch ignition OFF.
L.If engine does not start and system warning lamp flashes;
a.Switch ignition OFF. Repeat programming procedure.
M.Repeat above procedure to program remaining keys.
N.Keys can also be programmed using diagnostic equipment.
NOTE: A maximum of 8 keys can be programmed.
NOTE: If the system is in spare key programming disabled mode, the above procedure will not work.
Diagnostic equipment will be required to change to spare key programming enabled mode.
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