2020 Lincoln MKZ Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 Lincoln MKZ 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 2020 Lincoln MKZ 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 2020 Lincoln MKZ 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 2020 Lincoln MKZ?

When faced with a non-functioning cruise control in your 2020 Lincoln MKZ, it's important to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the vehicle's fuse box, as a blown fuse can often be the simplest explanation for the malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent proper engagement. The vehicle speed sensor is another critical component; verify its functionality since it directly influences cruise control operation. Utilizing a diagnostic scanner to check for error codes can provide insights into any underlying issues within the onboard computer system. Additionally, ensure that your brake lights are operational, as a faulty brake light switch can inhibit cruise control engagement. Finally, examine the throttle system for any irregularities, as these can also affect cruise control performance. By following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Lincoln MKZ, empowering you to tackle the problem with confidence.

What are the common problems that could cause the cruise control to stop working in a 2020 Lincoln MKZ?

When the cruise control in your 2020 Lincoln MKZ ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is faulty speed sensors, which are essential for the cruise control system to accurately gauge your vehicle's speed. If these sensors are malfunctioning, the system may not engage or maintain speed as intended. Another frequent issue is related to the brake light switch; if this switch is defective, it can inadvertently signal the cruise control to deactivate whenever the brakes are applied, disrupting its operation. Additionally, blown fuses can also be a simple yet overlooked cause, as a blown fuse can cut power to the cruise control system entirely. Furthermore, a faulty cruise control module may prevent the system from functioning correctly, while issues with the throttle actuator control system can hinder the cruise control's ability to maintain speed. By identifying these potential problems, you can take the necessary steps to diagnose and repair your cruise control system, restoring its functionality and enhancing your driving experience.

How urgent is it to address the malfunctioning cruise control in my 2020 Lincoln MKZ?

Addressing the malfunctioning cruise control in your 2020 Lincoln MKZ is of utmost importance due to the potential safety risks and vehicle performance issues it presents. A malfunctioning system can lead to unexpected acceleration or deceleration, significantly increasing the risk of accidents on the road. Moreover, such issues may be indicative of deeper electronic system or sensor problems, which could compromise other critical functions of your vehicle. Ignoring these symptoms not only jeopardizes your safety but can also lead to decreased fuel efficiency and performance, resulting in higher maintenance costs over time. By promptly diagnosing and repairing the cruise control issue, you can prevent further damage to your vehicle and ensure it operates safely and efficiently. Therefore, it is crucial to take action as soon as you notice any irregularities with your cruise control system to safeguard both your well-being and your investment in the vehicle.

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