2020 Mazda 6 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2020 Mazda 6

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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 2020 Mazda 6 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 Mazda 6 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.

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 Mazda 6?

When faced with a non-functioning cruise control in your 2020 Mazda 6, start by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can prevent the system from operating. Next, verify the functionality of the cruise control switch; a malfunctioning switch can hinder engagement. It's also crucial to inspect the speed sensors, as they play a vital role in the cruise control system's operation. Utilizing an OBD-II scanner to check for error codes can provide insights into specific problems affecting the system. Additionally, ensure that the brake and clutch pedal switches are functioning correctly, as these are designed to disengage cruise control when the pedals are pressed. Finally, examine the wiring and connections for any signs of damage or corrosion, as faulty wiring can disrupt the entire system. By systematically following these steps, you can effectively diagnose and address the issues with your cruise control, potentially saving time and money on professional repairs.

What are the common problems that could cause the cruise control to stop working in a 2020 Mazda 6?

When troubleshooting cruise control issues in a 2020 Mazda 6, 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, issues with the speed sensor can disrupt the cruise control's ability to maintain a steady speed, as the system relies on accurate speed readings to function correctly. Another potential issue is a blown fuse within the cruise control system; inspecting the fuse box for any damaged fuses and replacing them can often resolve the problem. Furthermore, a malfunction in the throttle control system can hinder the cruise control's performance, as it needs to adjust the throttle to maintain the set speed. Lastly, problems with the Electronic Control Module (ECM), which oversees various vehicle functions including cruise control, can lead to system failures. By systematically checking these components, you can effectively diagnose and potentially fix the cruise control issues in your Mazda 6.

How urgent is it to address the non-functioning cruise control in a 2020 Mazda 6?

When considering the urgency of fixing a non-functioning cruise control in a 2020 Mazda 6, it's essential to recognize that while this issue may not pose an immediate safety threat, it can significantly affect your driving experience. Cruise control is designed to enhance comfort, particularly during long drives, by allowing the vehicle to maintain a steady speed without constant acceleration input from the driver. Neglecting this feature can lead to increased driver fatigue and discomfort, especially on highways where cruise control is most beneficial. Furthermore, a malfunctioning system could indicate underlying issues that, if left unaddressed, might escalate into more significant mechanical problems. Therefore, while it may not be critical to fix immediately, addressing the cruise control issue promptly is advisable to ensure your vehicle operates at its best and to avoid potential inconveniences during your travels. For those inclined to tackle the repair themselves, understanding the system's components and common failure points can be a valuable first step in restoring this convenient feature.

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