2019 Ford Flex Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Ford Flex 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 2019 Ford Flex 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 2019 Ford Flex 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 throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

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 steps to diagnose the non-functioning cruise control in a 2019 Ford Flex?

To effectively diagnose the non-functioning cruise control in your 2019 Ford Flex, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, examine the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can prevent the system from engaging. Following this, verify the functionality of the vehicle's speed sensors, since faulty sensors can disrupt the cruise control's ability to maintain speed. It's also crucial to check the brake pedal switch, as a malfunction here can disable the cruise control entirely. If these initial checks do not reveal the problem, use a diagnostic scanner to look for any error codes that may indicate specific issues within the cruise control system. Finally, inspect the wiring and connections associated with the cruise control for any damage or corrosion, as these can lead to malfunctions. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control issues.

What are the common causes for the cruise control not working in a 2019 Ford Flex?

When your cruise control isn't functioning in a 2019 Ford Flex, it's essential to consider several common problems that could be at play. One of the primary culprits is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch is malfunctioning, it can prevent the system from engaging properly. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain speed, as it relies on accurate readings to operate effectively. Another potential issue is a blown fuse within the cruise control system; checking and replacing any blown fuses can often restore functionality. Furthermore, a defective cruise control module may require repair or replacement to ensure the system works as intended. Lastly, problems with the throttle control system can also hinder cruise control operation, necessitating a thorough inspection. By systematically addressing these common causes, you can troubleshoot and potentially resolve the cruise control issues in your Ford Flex, making it a manageable DIY project.

How urgent is it to address the non-functioning cruise control in a 2019 Ford Flex?

When it comes to a non-functioning cruise control in a 2019 Ford Flex, the urgency of addressing the issue cannot be overstated. While it may not seem like an immediate emergency, neglecting this problem can lead to significant safety risks, especially during long drives or highway travel where maintaining a consistent speed is crucial. A malfunctioning cruise control may signal deeper issues within the vehicle's electrical system or sensors, which, if left unaddressed, could escalate into more severe and costly repairs. Moreover, the convenience of cruise control not only enhances driving comfort but also contributes to better fuel efficiency, making its proper functioning essential for both safety and economy. Therefore, it is advisable to consult a qualified mechanic as soon as possible to diagnose and resolve the issue, ensuring the continued safe operation of your vehicle and preventing further complications down the road.

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