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Does a 2008 ford crown Victoria have a cruise control fuse? What fuse number would it be?

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To answer your qestion correctly I'd have to say no. There is not a cruise control fuse directly. But....Fuse #28 (7.5 amp) in the fuse block inside the car has to be good and Fuse # 14 (20 amp) in the under hood fuse box have to be good before cruise will work.

Posted on Feb 20, 2019

    MARVIV VIVERETTE JR Feb 20, 2019

    The most likely cause of cruise control inop on this model is the cruise control deactivator switch located on the brake pedal.


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No . your best bet , take it to a qualified repair shop.

The speed control system is controlled by the powertrain control module (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 switch(es) (ON, OFF, SET/ACCEL, COAST, RESUME), and the brake pedal switches (stoplamp and speed control deactivator switches). The steering wheel mounted switch(es) are hardwired to the PCM through the clockspring.
The speed control functions include:

  • turning on the speed control system.
  • setting and maintaining the desired vehicle speed.
  • accelerating the vehicle to a higher speed.
  • decelerating down to a lower speed.
  • tapping-up/tapping-down the vehicle speed.
  • resuming the prior vehicle speed.
  • turning off the vehicle speed control system.
Pressing and releasing the ON switch turns the speed control system on. Pressing and releasing the SET/ACCEL or COAST switch while the vehicle is traveling at the desired speed activates the speed control system.
Tapping the SET/ACCEL or the COAST switch while in the set mode respectively, increases or decreases the maintained vehicle speed by 1.6 km/h (1 mph) per tap. If the respective button is pressed and held, the vehicle speed continues to accelerate or decelerate until the button is released.
Pressing and releasing the OFF switch, or turning the ignition switch to the OFF position, turns the speed control system off. Pressing the brake pedal puts the speed control system into the STANDBY mode. Pressing the RESUME button, when the speed control system is in the STANDBY mode causes the vehicle to accelerate to the last set speed. Resume does not function if the OFF button is pressed, the ignition switch is in the OFF position, or if the current vehicle speed is below the minimum operational speed.
Whenever the speed control system is engaged and active, a speed control icon on the instrument cluster is illuminated.
NOTE: The speed control deactivator switch is provided as an additional safety feature. Normally, when the brake pedal is applied, an electrical signal is sent from the stoplamp circuit to the PCM to release the throttle. Under increased brake pedal effort, the speed control deactivator switch opens and removes the voltage signal from the PCM input circuit, deactivating the speed control system.
NOTE: The clockspring provides the electrical interface between the steering column wiring and the speed control switch(es) in the steering wheel.
The inputs to the PCM are:
  • Transmission output shaft speed (OSS) sensor
  • Digital transmission range (TR) sensor
  • Speed control switches
  • Stoplamp switch
  • Speed control deactivator switch
  • Accelerator pedal position sensors
The outputs of the PCM for the speed control system are:
  • Speed control indicator lamp
  • Throttle command
The speed control system throttle position is completely controlled by the PCM through the electronically controlled throttle body. Speed control electronics are contained entirely within the electronic throttle control (ETC) subsystem.
When the speed control system is active, the PCM corrects for deviations in the actual vehicle speed by proportionally moving the throttle plate. The PCM modulates the throttle to minimize error between the actual vehicle speed and the desired speed.
The PCM strategy uses the throttle control for smooth accelerations.
The PCM sends a serial message over the controller area network (CAN) to the instrument cluster whenever the speed control telltale should be turned on or off.
In the event of an OFF command or a deactivation request from the speed control deactivator switch, the speed control system carries out a hard deactivation and immediately returns the throttle to the idle position.
The speed control system provides self-diagnostics. Speed control is disabled anytime an error is detected in the system. No instrument cluster telltale or message center messages are displayed when faults occur. Fault codes are logged by the PCM.
An ETC system fault also causes the speed control system to be disabled. In this case, an ETC system warning telltale (wrench light) or a message center message is displayed.
Additionally, the following conditions causes the speed control system to deactivate:
  • Transmission gear selector in a position other than D or OD.
  • Speed control set speed is over-ridden with the accelerator pedal for a period longer than 5 minutes.
  • Vehicle speed loss from set speed of greater than 16 km/h (10 mph) occurs.
  • Vehicle speed falls below the minimum allowable limit of 48 km/h (30 mph).
  • Speed control switch pressed or stuck longer than 2 minutes.

Inspection and Verification
WARNING: If equipped with fire suppression system, refer to Section 419-03 for important safety warnings.
  1. Verify the customer concern.
  1. Visually inspect the following for obvious signs of mechanical or electrical damage.

Visual Inspection Chart Mechanical Electrical
  • Throttle body
  • Central junction box (CJB) fuse 5 (10A)
  • Circuitry
  • Stoplamp switch
  • Speed control deactivator switch
  • Powertrain control module (PCM)
  • Speed control switches

  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. Verify the stoplamps operate correctly with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to Section 417-01 .
  1. If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
    • check that the program card is correctly installed.
    • check the connections to the vehicle.
    • check the ignition switch position.
  1. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
  1. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
    • CAN circuits fault; all electronic control units no response/not equipped, refer to Section 418-00 .
    • No response/not equipped for PCM, refer to Section 418-00 .
    • System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the PCM.
  1. If the DTCs retrieved are related to the concern, go to the Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index.
  1. If no DTCs related to the concern are retrieved, GO to Symptom Chart .

Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) Index DTCs Description Source Action P0500 Vehicle Speed Error PCM REFER to Section 307-01 . P0579 Cruise Control Multi-Function Input A Circuit Range/Performance PCM Go To Pinpoint Test C . P0581 Cruise Control Multi-Function Input A Circuit High PCM Go To Pinpoint Test C . P0720 Insufficient Input from Output Shaft Speed Sensor PCM REFER to Section 307-01 . P0721 Noise Interference on Output Shaft Speed Sensor Signal PCM REFER to Section 307-01 . P0722 No Signal from Output Shaft Speed Sensor PCM REFER to Section 307-01 . P1572 Brake Pedal Switch Circuit PCM Go To Pinpoint Test B . P1703 Brake Switch Out of Self-Test Range PCM Go To Pinpoint Test B .

Posted on Feb 20, 2019


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SOURCE: 1998 ford crown victoria fuse box diagram

it should be in your owner manual. if not, I can look up something for you but can't post illustrations to this site.

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SOURCE: need wiring diagram for 2008 ford crown victoria


You can purchase the wiring diagram for $5.99 from the following site: You can also purchase a wiring diagram book from the following link:

Hope this helps,


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SOURCE: fuse diagram for 2000 crown victoria

there are 5+ pages of fuses what specifically do you need

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