2004 ford explorer ABS light on, cruise control quit working. Problem?

If the switch is replaced,then it can be wiring issue or faulty cruise control board.But as the switch is replaced,get the voltage at the switch tested to confirm the switch is actually receiving voltage.If no voltage received at switch power supply wire then ,apply external 12 volt power to the cruise control switch wire and then see if cruise control comes ON.If yes,then you know wiring is issue.
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On this case, to troubleshoot this problem, there are solved help links. Click the link directly and refer the details to solve this problem yourself, with help of diagrams: ------

Ford ranger cruise control not working? http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html

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Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

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Horn and cruise control not working on Plymouth Grand Voyager?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

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Horn and Cruise control quit working on 2003 Jaguar S-Type?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

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Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500

http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

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Cruise control stop working on 1994 Ford ranger?

http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

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Cruise control not working?

http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

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1996 Ford Explorer: Cruise Control Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/1996-ford-explorer-cruise-control.html

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These will help.

Thanks.

On these case,to troubleshoot these problem,there are solved help links.Click the link directly and refer the details to solve these problem yourself,with help of diagrams:------
Ford ranger cruise control not working?

http://technoanswers.blogspot.in/2012/02/ford-ranger-cruise-control-not-working.html

----------- Horn and Cruise control quit working?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working.html

--------

Horn and cruise control not working on Plymouth Grand Voyager?

http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html

------------------
Horn and Cruise control quit working on 2003 Jaguar S-Type? http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html

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Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

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Cruise control stop working on 1994 Ford ranger? http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html

----------
Cruise control not working? http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html

--------------
1996 Ford Explorer: Cruise Control Wiring Diagram?

http://schematicsdiagram.blogspot.in/2012/06/1996-ford-explorer-cruise-control.html
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These will help.
Thanks.

There should be at least 5 abs sensors:
One for low brake fluid------- check master cylinder for low fluid, if it is low( use dot 3 brake fluid ) to fill it.
The other 4 on the back side of each wheel called wheel speed sensors ( which are tied in with abs system).
To really pinpoint the problem, an abs code scanner should be hooked up to it, that would tell what is causing the light to come on.
I think advanced auto parts store or auto zone check it for free (if there is one near you) otherwise some places charge $80.00 to $100.00 for 30 seconds just to retrieve the code.
As far as the cruise control, it could be a vacuum problem or accuator problem, etc. Without testing it's hard to say.

is your cruise control working? If it is not it could be your speed control sensor. Usually when this fails it sets off your ABS sensor. It could be other things but it's something to cross off

For some year models of Explorers involved in the Cruise Control recall, there were additional wiring problems caused by the modification of the Cruise Control. These problems included yours and Brake lights working independent of the brakes. Contact a dealer about this SECOND service bulletin.

The above problems are more likely if the 4x4 is showing a light and the vehicle is in 2 wheel drive. The ABS indicator light is usually to be trusted without the Cruise problem. It would not hurt to check the brake pad linings, sometimes the lining shifts and drops down off the metal of the pads. Finally if the ABS light is still showing a problem that you can not find, check the Emergency brake pads inside the rear rotors.

on top of your brake master cylender under the hood (where you put in brake fluid) there is a sensor in the end of it which is for your cruise control. Un-plug the electrical connector and see if you see brake fluid in that sensor -take it to the dealer. This faulty cruise control switch has been the cause of many Fords catching fire. They will fix it for free-it is now a recall. This problem will allow the cruise not to work and an a.b.s. light also. Hope this helps!

Could be a Vehicle Speed Sensor (VSS) Located on the transmission. Not an expensive fix at all. Have a diagnostic check run on it from any auto parts store if you have a check engine light on.

Here is a link to the owner's manual for your Explorer. The fuse box layout with descriptions begins on page 187

http://www.motorcraftservice.com/pubs/content/~WO4EXP/~MUS~LEN/41/04expog3e.pdf

it sounds like the speed sensor in the rear differential is faulty