I have an 02 ford excursion that the cruise control isn't working.. when you activate the cruise the light comes on and then goes out. I've replaced the on off switch, checked the light on the dash. when you push the off button engine off, key in the on position the light flashes once, push the on button it flashes twice, push the coast , reset , and set nothing happen's.

SOURCE: 2003 expedition cruise control inoperative

I had this same Problem and it was a simple vaccuum hose leak connected to the cruise control module. Try replacing this small hose.

SOURCE: 2005 Ford Taurus cruise control stopped working

couple things could had appened first the cruise control module or cru may have went out could be a malfuntion in the with some speed sensors or the vaccum lines have gotten to dry rotted to do the job necessary to maintain the speed

SOURCE: 2004 Ford Freestar cruise control not working

Try pulling up the brake pedal with your foot,Sometimes your brake doesnt come back all the way,and the brake switch keeps the cruise from working.Also,check the fuse.If those answers dont help,It could be the swith itself is bad.Those can be bought at a parts store.

SOURCE: 2003 expedition cruise control inoperative no

I'm having the same issue with mine. Just checked both fuses #5 and #12 under the dash, but both are fine. Can't find Relay #302 for the speed servo. 2003's aren't listed in the recall. Ugh!

SOURCE: cruise control will not turn on. light on dash use

Did you have the recall for the cruise control done ?
recall 05S28. Description: Speed Control Deactivation Switch.

It could be the fuse in the recall harness is blown.

Try the Cruise Control Self test :
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Self-Test Diagnostics

WARNING:
This test is a key on engine off (KOEO) test only that is conducted in park only with emergency brake fully engaged.

1. Enter self-test diagnostics by depressing the speed control OFF switch while turning the ignition key ON, making sure the engine does not start and is not running. The speed control indicator on the instrument panel will flash once to indicate that speed control module entered the diagnostic mode. Five additional flashes at this point indicate a defective speed control servo. Release the OFF switch.

2. Press the remaining switches in this sequence: ON, RESUME, COAST and SET/ACCEL.

If the ON switch is not depressed within five seconds after entering the diagnostics mode, the module times out and the procedure must be started over.

The speed control indicator lamp will flash as each switch is depressed. Press each switch in the sequence immediately after the indicator light goes out for the previous switch.

Note:
There will be a slight delay when the last button is pressed and the lamp flashes.

3. A lamp flash with the last button (SET/ACCEL) indicates that the static test passed. If the lamp does not flash with the last button and there are no additional flashes of the lamp, the switch is defective.

If the lamp does not flash with the last button, and additional flashes occur, follow the chart below for trouble codes:

— 2 flashes - BPP defective, circuit is defective, brake applied, CPP switch or jumper (if equipped).

— 3 flashes - deactivator switch is open or circuit defective.

— 4 flashes - vehicle speed signal is out of range or circuit is defective

4. Immediately (.25 second delay) after the static test, the speed control servo does a dynamic test by automatically actuating the throttle lever from 8 mm (0.315 in) to 12 mm (0.472 in) of travel from the idle position. During the dynamic throttle pull, observe throttle movement to witness any binding or sticking of the speed control cable and correct connection of speed control cable to throttle lever. Make sure the throttle returns to the idle position.

5. Return the ignition switch to the OFF position and proceed to the Symptom Chart.
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If the Cruise Control does not enter self test, the fuse in the recall harness ( if done ) is most likely blown and needs to be replaced.

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