Ford Fiesta Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Ford Fiesta and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
25% chance it's the
Control Module
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Ford Fiesta cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to erratic vehicle behavior or failure of various electronic systems due to improper signal processing.
  • Throttle: A faulty throttle body or a defective accelerator pedal position sensor may be causing inconsistent throttle response.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a Ford Fiesta cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

Troubleshooting Cruise Control Issues in a Ford Fiesta

When troubleshooting cruise control issues in your Ford Fiesta, it's essential to adopt a systematic diagnostic approach. Begin by checking the fuses, as a blown fuse is often the simplest and most common culprit behind cruise control failures. Inspect both the cruise control and brake light fuses to ensure they are intact. Next, verify the functionality of your brake lights and the brake switch; if these components are malfunctioning, they can prevent the cruise control from engaging. If the basics check out, move on to examine the control module and associated sensors, as faults in these areas can disrupt the cruise control system. Additionally, assess the throttle for any irregularities, as throttle issues can hinder the system's ability to maintain speed. Finally, consider any engine-related problems, especially if the check engine light is illuminated, as these can also impact cruise control functionality. By following this methodical approach, you can effectively identify and resolve the underlying issues affecting your Ford Fiesta's cruise control system.

What Could Cause the Cruise Control to Malfunction in a Ford Fiesta?

When dealing with cruise control malfunctions in a Ford Fiesta, it's essential to understand the common problems that may arise. One of the first things to check is the fuse, as a blown fuse can lead to intermittent connectivity, causing the cruise control to fail. Additionally, issues with the control module, sensors, or switches can disrupt the system's functionality. For instance, throttle actuation problems are frequently reported, particularly in models like the 2018 Fiesta, where throttle and sensor failures are common culprits. Other potential issues include a malfunctioning brake pedal position sensor, which can prevent the cruise control from engaging, as well as throttle body malfunctions and problems with the PRNDL or shifter position switch. In older models, a broken vacuum line may also be a factor. Furthermore, a defective brake light or brake switch, along with any engine-related problems indicated by a check engine light, can contribute to cruise control failures. By systematically diagnosing these areas, DIYers can effectively pinpoint the issue and take the necessary steps to restore their cruise control functionality.

Why is it Critical to Fix the Cruise Control Issue in a Ford Fiesta?

Neglecting cruise control issues in your Ford Fiesta can lead to serious safety hazards and performance problems that demand immediate attention. A malfunctioning cruise control system can cause erratic speed changes, increasing the risk of accidents and compromising your safety on the road. Moreover, the comfort of long drives is significantly diminished when the cruise control fails, as drivers are forced to constantly adjust their speed manually. This not only detracts from the driving experience but can also lead to fatigue. Additionally, unresolved issues can affect the overall performance of your vehicle, as a faulty control module or sensor may disrupt the engine's efficiency, leading to increased fuel consumption and potential engine damage. Furthermore, a well-functioning cruise control system is a key factor in maintaining your vehicle's resale value; prospective buyers are likely to be deterred by a car with unresolved mechanical issues. Therefore, addressing cruise control problems promptly is essential for ensuring safety, enhancing driving comfort, optimizing vehicle performance, and preserving your investment.

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