2020 Mazda 3 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2020 Mazda 3 and How to Fix Them

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Reviewed by
Bo Fader
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 3 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 3 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 steps should I take to diagnose the cruise control issue in my 2020 Mazda 3?

To diagnose the cruise control issue in your 2020 Mazda 3, begin with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to malfunctions. Utilizing an OBD-II scanner is also crucial; it allows you to identify any error codes that may indicate specific problems within the cruise control system. Following this, check the speed sensors, as they are essential for the system's performance. Additionally, inspect the brake and clutch switches to confirm they are engaging correctly, since issues here can prevent the cruise control from activating. Finally, test the cruise control module to ensure it is functioning properly. If these steps do not resolve the issue, seeking assistance from a professional mechanic or an authorized Mazda service center is recommended for further diagnosis. By following this structured approach, you can effectively troubleshoot and potentially resolve the cruise control issue in your Mazda 3.

What are the common problems that could cause the cruise control to stop working in a 2020 Mazda 3?

When the cruise control in your 2020 Mazda 3 ceases to function, several common issues may be at play. One of the first things to check is the vehicle's fuse box; a blown fuse can easily disrupt the cruise control system. If the fuse is intact, the next step is to inspect the brake pedal switch, which is crucial for disengaging cruise control when the brakes are applied. A malfunctioning switch can prevent the system from operating correctly. Additionally, consider the speed sensor, as it plays a vital role in maintaining a constant speed; any issues here can lead to cruise control failure. It's also important to evaluate the throttle control system, particularly the throttle position sensor, since problems in this area can hinder the cruise control's ability to function smoothly. Lastly, the Electronic Control Module (ECM) should be assessed, as it manages various vehicle functions, including cruise control. By systematically checking these components, you can effectively diagnose and potentially resolve the cruise control issues in your Mazda 3, making it a manageable DIY project.

How urgent is it to address the malfunctioning cruise control in my 2020 Mazda 3?

When it comes to the malfunctioning cruise control in your 2020 Mazda 3, the urgency of addressing the issue cannot be overstated. A malfunctioning system can lead to unexpected acceleration or deceleration, creating hazardous driving conditions that could result in accidents. Moreover, such issues may signal deeper problems within your vehicle's electronic systems or sensors, which can compromise overall performance and safety. Ignoring these symptoms not only risks your safety but can also lead to increased fuel consumption and potential damage to other vehicle components. By addressing the malfunction promptly, you can prevent further damage and avoid costly repairs down the line. Therefore, it is crucial to have the issue diagnosed and repaired by a qualified mechanic as soon as possible to ensure your safety and the optimal functioning of your Mazda 3.

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