Ford 2004 F150 Owner's Manual page 67

Driver Controls
also recommended that a new battery be placed in the hand-held
transmitter of the device being programmed to HomeLink for quicker
training and accurate transmission of the radio-frequency signal.
1. Press and hold the two outside
buttons releasing only when the red
light begins to flash after 20
seconds. Do not repeat step one to
program additional hand-held
transmitters to the remaining two
HomeLink buttons. This will erase
previously programmed hand-held
transmitter signals into HomeLink .
2. Position the end of your
hand-held transmitter 2–8 cm (1–3 inches) away from the HomeLink
button you wish to program (located on your visor) while keeping the
red light in view.
3. Simultaneously press and hold
both the HomeLink and hand-held
transmitter button. Do not release
the buttons until step 4 has been
completed.
Some entry gates and garage door
openers may require you to replace
step 3 with procedures noted in the
"Gate Operator and Canadian Programming" in this section for Canadian
residents.
4. The red light will flash slowly and then rapidly. Release both buttons
when the red light flashes rapidly. (The rapid flashing light indicates
acceptance of the hand-held transmitters' radio frequency signals.)
5. Press and hold the just-trained HomeLink button and observe the red
light. If the light is a constant red, programming is complete and your
device should activate when the HomeLink button is pressed and
released. Note: To program the remaining two HomeLink buttons,
begin with step 2 in the "Programming" section — do not repeat step 1.
Note: If the red light blinks rapidly for two seconds and then turns to a
continuous red, proceed with steps 6 through 8 to complete
programming of a rolling code equipped device.
6. At the garage door opener receiver (motor-head unit) in the garage,
locate the "learn" or "smart" button (usually near where the hanging
antenna wire is attached to the unit).
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