2010 Ford Mustang Owner's Manual - Page 103

Locks and Security programmed to your vehicle; only four of these eight keys can be IKTs with remote entry functionality. If your IKTs or standard SecuriLock coded keys are lost or stolen and you don't have an extra coded key, you will need to have your vehicle towed to an authorized dealer. The key codes need to be erased from your vehicle and new coded keys will need to be programmed. Replacing coded keys can be very costly. Store an extra programmed key away from the vehicle in a safe place to help prevent any inconveniences. Please visit an authorized dealer to purchase additional spare or replacement keys. Programming spare keys You can program your own integrated keyhead transmitters or standard SecuriLock coded keys to your vehicle. This procedure will program both the engine immobilizer keycode and the remote entry transmitter portion of the IKT to your vehicle. Note: A maximum of eight coded keys can be programmed to your vehicle; only four of these eight can be IKTs with remote entry functionality. Tips: • Only use integrated keyhead transmitters (IKTs) or standard SecuriLock keys. • You must have two previously programmed coded keys (keys that already operate your vehicle's engine) and the new unprogrammed key(s) readily accessible. • If two previously programmed coded keys are not available, you must take your vehicle to your authorized dealer to have the spare key(s) programmed. Please read and understand the entire procedure before you begin. 1. Insert the first previously programmed coded key into the ignition. 2. Turn the ignition from the 1 (off) position to the 3 (on) position. Keep the ignition in the 3 (on) position for at least three seconds, but no more than 10 seconds. 3. Turn the ignition to the 1 (off) position and remove the first coded key from the ignition. 103