How do I change the keyless entry code on my 2004 Ford Freestar?

Answer 1

You cannot "change" the keyless entry code that was set at the factory but you can add an alternate/personal code.

I will provide you with the link (free & in pdf format) to down load your owners manual (rather than type or copy pages)

See pages 101-102
http://www.motorcraftservice.com/pubs/content/~WO4WIN/~MUS~LEN/41/04winog3e.pdf

Answer 2

I believe that the information is available in the owner's manual. good luck.

To create your own personal entry code(s):
1. Enter the factory set code.
2. Within five seconds press and release the 1 • 2 on the keypad.
3. Enter your personal 5-digit code. Each number must be entered
within five seconds of each other.
4. Enter a sixth digit to indicate which personality feature should be
recalled by the personal code.
• 1 • 2 recalls personal entry code 1.
• 3 • 4 recalls personal entry code 2.
• 5 • 6 recalls personal entry code 3.
• 7 • 8 and 9 • 0 do not recall an entry code.
5. Within five seconds, initiate Step 3 and Step 4 to program additional
codes (if desired).
6. After five seconds of keypad inactivity, programming mode is exited.
All of the vehicle doors will lock and unlock to confirm the code has
been stored. Each driver personality profile (personality 1 or personality
2) can be associated with only one personal code. The factory-set code
cannot be associated with a personality code.
You can program up to three personal codes to unlock your vehicle.
These codes do not replace the permanent code that was provided by
your dealer.
2004 Windstar

Answer 3

Take it to the dealership and they will reprogram it for you