Depends on the model of your car, on mine (XKR) the cruise stopped working because of a faulty microswitch behind the brake pedal, there are two microswitches, one to turn on the brake lights and the other is used by the ECU to make sure you are not pressing the brake (which is the signal to cancel cruise). If that switch is faulty the car will not enter cruise mode. Hope that helps, Nick.
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: ------
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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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http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html
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http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html
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http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html
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http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html
--------------
----------
These
will help.
Thanks.
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
-------------
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
----------
These will help.
Thanks.
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 car?
http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-not-working-on.html
------------
Horn and Cruise control
quit working suddenly?
http://howtobyme.blogspot.com/2011/11/horn-and-cruise-control-quit-working-on.html
----------
Cruise control stop working ?
http://technoanswers.blogspot.in/2012/02/cruise-control-stop-working-on-1994.html
---------
ford ranger cruise control not working?
http://technoanswers.blogspot.in/2012/02/2005-ford-ranger-cruise-control-not.html
-------------
My Cruise control not working?
http://schematicsdiagram.blogspot.com/2011/12/cruise-control-not-working.html
----------
This troubleshooting help links will help you to confirm the problem.
Thanks.
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