2021 Mazda CX-5 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2021 Mazda CX-5

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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 2021 Mazda CX-5 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 2021 Mazda CX-5 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 steps to diagnose the cruise control issue in a 2021 Mazda CX-5?

To diagnose a cruise control issue in your 2021 Mazda CX-5, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse to ensure it is intact, as a blown fuse can easily disrupt the system. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these controls are essential for operation. If these initial checks do not reveal the problem, use an OBD-II scanner to look for error codes that may indicate specific issues within the cruise control system. Following this, examine the speed sensors, as they are critical for the cruise control's functionality. Ensure that the brake and clutch switches are working properly, since these components are designed to disengage the cruise control when either pedal is pressed. If the issue persists, test the cruise control module to confirm it is sending and receiving signals correctly. Finally, inspect all wiring and connections related to the cruise control system for any damage or corrosion that could be causing the malfunction. By following this structured approach, you can effectively diagnose and address cruise control issues in your Mazda CX-5.

What are the common problems that could cause the cruise control to stop working in a 2021 Mazda CX-5?

When dealing with cruise control issues in a 2021 Mazda CX-5, it's essential to understand the common problems that may arise. One frequent culprit is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch malfunctions, it can prevent the system from engaging properly. Additionally, speed sensor issues can disrupt the cruise control's functionality, as the system relies on accurate speed readings to maintain the desired pace. Another potential problem is a blown fuse, which can completely disable the cruise control system. Furthermore, a malfunctioning throttle actuator can hinder the system's ability to maintain speed, while problems with the Electronic Control Module (ECM) can also lead to cruise control failures, given its role in managing various vehicle functions. If you experience any issues with your cruise control, it's advisable to consult a qualified mechanic for a thorough inspection and diagnosis.

How urgent is it to address the malfunctioning cruise control in my 2021 Mazda CX-5?

When it comes to the malfunctioning cruise control in your 2021 Mazda CX-5, the urgency of addressing the issue cannot be overstated. A malfunctioning system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk on the road. Moreover, cruise control is often utilized during long drives for convenience, and any malfunction can detract from the overall driving experience, making trips less enjoyable and more stressful. Additionally, neglecting these symptoms can lead to increased fuel consumption, as inconsistent speed control can cause your vehicle to work harder than necessary. By addressing the issue promptly, you not only enhance your safety and comfort but also prevent potential further damage to your vehicle's systems, which could save you from costly repairs down the line. Therefore, it is crucial to have your cruise control system diagnosed and repaired by a qualified mechanic as soon as possible to ensure your Mazda CX-5 remains in optimal condition.

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2021 Mazda CX-5 Cruise Control Not Working: Causes & Fixes