2003 Ford Mustang Owner Guide 5th Printing - Page 58

Locks and Security Replacement keys If your keys are lost or stolen and you don't have an extra coded key, you will need to have your vehicle towed to a dealership. 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 coded keys to your vehicle. Please read and understand the entire procedure before you begin. Tips: • A maximum of eight keys can be coded to your vehicle. • Only use 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 no previously programmed coded keys are available, you must take your vehicle to your dealer to have the spare key(s) programmed. 1. Insert a previously programmed coded key 4 3 into the ignition. 5 2. Turn the ignition 2 from the 3 (OFF) position to the 4 (ON) 1 position. Keep the ignition in the 4 (ON) position for at least one second, but no more than 10 seconds. 3. Turn the ignition to the 3 (OFF) position, and remove the coded key from the ignition. 58 2003 Mustang (mus) Owners Guide (post-2002-fmt) USA English (fus)