2018 Ford Fiesta Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Ford Fiesta and How to Fix Them

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Reviewed by
Aisha
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 2018 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 2018 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2018 Ford Fiesta?

When faced with a non-functioning cruise control in your 2018 Ford Fiesta, start by checking the cruise control fuse, as a blown fuse can often be the simplest explanation for the issue. Next, ensure that the cruise control settings are correctly configured according to your vehicle's manual, as incorrect settings can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying problems that may not be immediately visible. Additionally, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these controls are crucial for operation. Finally, test the brake pedal switch, since the cruise control system is designed to disengage when the brake is applied; a faulty switch could be the culprit behind your cruise control issues. By systematically following these steps, you can effectively diagnose and potentially resolve the problem with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2018 Ford Fiesta?

When troubleshooting cruise control issues in a 2018 Ford Fiesta, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake pedal switch, which is designed to disengage the cruise control when the brake is applied; if this switch malfunctions, it can prevent the system from engaging. Additionally, speed sensor issues can disrupt the cruise control's ability to maintain a steady speed, as the system relies on accurate speed readings to function correctly. A blown fuse in the cruise control circuit can also lead to a complete failure of the system, making it crucial to check the fuse box for any damaged fuses. Furthermore, problems with the throttle control can hinder the cruise control's performance, as it may not be able to adjust speed effectively. Electrical problems, such as damaged wiring or loose connections, can also interfere with the system's operation, so inspecting these components is vital. Lastly, if the cruise control module itself is faulty, it may need to be replaced to restore functionality. By systematically addressing these potential issues, you can effectively diagnose and resolve cruise control problems in your Ford Fiesta.

How urgent is it to address the non-functioning cruise control in a 2018 Ford Fiesta?

When it comes to a non-functioning cruise control in a 2018 Ford Fiesta, the urgency of addressing the issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this problem can lead to more significant safety risks and potential damage to your vehicle. Cruise control is designed to enhance your driving experience by maintaining a steady speed, which is particularly beneficial during long trips. If the system is malfunctioning, it may indicate deeper issues within the vehicle's electronic systems or sensors, which could affect other critical functions. Moreover, ignoring the cruise control problem could lead to increased driver fatigue on long journeys, as you may find yourself constantly adjusting your speed. For those who prefer a DIY approach, it’s essential to diagnose the issue promptly, as early intervention can prevent further complications and ensure your vehicle remains safe and efficient on the road. Therefore, while it may not require immediate action, addressing the cruise control malfunction should be a priority to maintain the overall performance and safety of your Ford Fiesta.

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2018 Ford Fiesta Cruise Control Issues & Repairs | RepairPal