Ford 2004 Expedition Owner's Manual page 140

Locks and Security
Note: The 5–digit code (e.g. 12345)
will be in large, BOLD numbers on
the module label.
When pressing the controls on the keyless entry keypad, press the
middle of the controls to ensure a good activation.
Programming your own personal entry code
To program your own code:
6. Enter factory set code (keypad will illuminate when pressed).
7. Press 1/2 control within five seconds of step 1.
8. Enter your personal 5 digit code.
Enter each digit within five seconds
of previous one.
9. After the code is entered, the
locks will cycle, confirming that the
new code has been set.
Do not set a code that includes five of the same number or presents
them in sequential order. Thieves can easily figure out these types of
codes.
Your personal code does not replace the permanent code that the
dealership gave you. You can use either code to unlock your vehicle. If a
second personal code is entered, the module will erase the first personal
code in favor of the new code.
If you wish to erase your personal code, use the following instructions:
1. Enter factory set code.
2. Press 1/2 control and release.
The system will now only respond to the factory set code.
140
2004 Expedition (exd)
Owners Guide (post-2002-fmt)
USA English (fus)