2010 Ford Mustang Owner's Manual - Page 102

Locks and Security Anti-theft indicator The anti-theft indicator is located in the instrument cluster. • When the ignition is in the off position, the indicator will flash once every two seconds to indicate the SecuriLock system is functioning as a theft deterrent. • When the ignition is in the on position, the indicator will glow for three seconds, then turn off to indicate normal system functionality. If a problem occurs with the SecuriLock system, the indicator will flash rapidly or glow steadily when the ignition is in the on position. If this occurs, turn the ignition off then back to on to make sure there was no electronic interference with the programmed key. If the vehicle doesn't start, try to start it with the 2nd programmed key and if successful contact your authorized dealership for key replacement. If the indicator still flashes rapidly or glows steadily, the vehicle will not start, contact your authorized dealer as soon as possible for service. Automatic arming The vehicle is armed immediately after switching the ignition to the off position. The theft indicator will flash every two seconds to act as a theft deterrent when the vehicle is armed. Automatic disarming Switching the ignition to the on position with a coded key disarms the vehicle. • The theft indicator will illuminate for three seconds and then go out. • If the theft indicator stays on for an extended period of time or flashes rapidly, contact your authorized dealer as soon as possible. Replacement integrated keyhead transmitters (IKT) and coded keys Note: Your vehicle comes equipped with two integrated keyhead transmitters (IKTs). The IKT functions as both a programmed ignition key that operates all the locks and starts the vehicle, as well as a remote keyless entry transmitter. A maximum of eight coded keys can be 102