How to fix cruise control on a 2006 ford freestar, does not work at all, wont turn on

Note the diagram, at least check the fuse. Check trouble codes, related to cruise control. to check codes yourself, at least, you need an obd2 code reader that will read po codes as well as manufacturer specific codes. It is worth the investment, in my opinion. Make sure the brake lites work.

There is a small sensor on the bottom of the master cylinder. Wiring may be loose or the sensor bad, they are well known to go bad and cause the cruise control to stop working outright.

It is a brake pressure sensor and is designed to shut the cruise of when braking. I believe it is normally closed and allows continuity through the system and when the breaks are applied the pressure opens the circuit. If the sensor is defective it often stays in an open state not allowing the cruise to come on/initialize.

Best thing to start looking at is your cruise control relays and fuses.

You should have a qualified shop check it , computer involved in the control of it . Plus electronic throttle control . Having a capable scan tool hooked up to check data , inputs from the cruise control switches etc...
Speed Control The speed control system consists of the following components:

• Speed control switches
• Speed control deactivator switch
• Speed control indicator
• Powertrain control module (PCM)
• Electronically controlled throttle body
• Clockspring

The speed control system is controlled by the PCM. The speed control system is designed to maintain a selected vehicle speed between 48 and 200 km/h (30 and 124 mph). The speed control system is controlled by the steering wheel mounted switches (ON, OFF, SET+, SET-, CANCEL, and RESUME), and the brake pedal. The steering wheel mounted switches are hardwired to the PCM.
The speed control functions include:

• Turning the speed control system on.
• Setting and maintaining the desired vehicle speed.
• Accelerating the vehicle speed.
• Decelerating the vehicle speed.
• Resuming the prior vehicle speed.
• Turning the vehicle speed control system off.
• Canceling the speed control.

is the air bag light on ?

Do you know what are DTC'S - diagnostic trouble codes

Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index DTC Description Source Action P0579 Cruise Control Multifunction Input A Circuit Range/Performance PCM Go To Pinpoint Test C . P0581 Cruise Control Multifunction Circuit High PCM Go To Pinpoint Test C . P0720 Output Shaft Speed Circuit Fault PCM REFER to Section 307-01A or Section 307-01B . P0721 Output Shaft Speed Circuit Fault PCM REFER to Section 307-01A or Section 307-01B . P1500 Vehicle Speed Error PCM REFER to Section 307-01A or Section 307-01B . P1501 Vehicle Speed Error PCM REFER to Section 307-01A or Section 307-01B . P1572 Brake On/Off Failure PCM Go To Pinpoint Test B . P1703 Brake On/Off Failure PCM Go To Pinpoint Test B .
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