FORD 2013 Mustang v.2 - Manual (Page 68)

6. Turn the ignition off and remove the second previously programmed
coded key from the ignition.
7. After three seconds but within 20 seconds of turning the ignition off
and removing the previously programmed coded key, insert the new
unprogrammed key into the ignition.
8. Turn the ignition from off to on. Keep the ignition on for at least six
seconds.
9. Remove the newly programmed coded key from the ignition.
The key will start the vehicle’s engine and will operate the remote entry
system (if the new key is an integrated keyhead transmitter) if it has
been successfully programmed. The theft indicator light will illuminate
for three seconds and then go out to indicate successful programming.
If the key was not successfully programmed, the theft indicator light may
flash on and off. Wait 20 seconds and repeat Steps 1 through 8. Take
your vehicle to your authorized dealer to have the new key programmed
if you are still unsuccessful.
Wait 20 seconds and then repeat this procedure from Step 1 to program
an additional key.
ANTI–THEFT ALARM (IF EQUIPPED)
The active anti-theft system is designed to warn you in the event of
unauthorized vehicle entry and is also designed to help prevent
unwanted towing of the vehicle.
You can choose what is monitored by arming the system in different
ways.
Partial Monitor Mode
To monitor the following:
• Doors
• Hood
• Trunk
Lock the vehicle using the key in the driver door key cylinder.
Full Monitor Mode
To monitor the following:
• Doors
• Hood
68 Security
2013 05+ Mustang (197)
Owners Guide gf, 2nd Printing
USA (fus)