2018 Mazda CX-5 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Mazda CX-5 and How to Fix Them

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Reviewed by

Aisha

Written by RepairPal Car Genius

Updated January 14, 2025

30% chance it's the

Sensor

25% chance it's the

Control Module

25% chance it's the

Throttle

20% chance it's

Something else

The most common reasons a 2018 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.

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RepairPal Certified shops can diagnose and repair your 2018 Mazda CX-5 electronics and electrical issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How much does it cost to fix a 2018 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.

What are the steps to diagnose the cruise control issue in a 2018 Mazda CX-5?

To effectively diagnose a cruise control issue in a 2018 Mazda CX-5, it's essential to adopt a systematic approach that begins with the simplest potential problems before progressing to more complex diagnostics. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent proper engagement. Utilizing an OBD-II scanner to scan for error codes is a crucial step, as these codes can provide insights into specific malfunctions within the cruise control system. Following this, examine the speed sensors, as faulty sensors can hinder the cruise control from activating. Additionally, ensure that the brake lights are functioning correctly, since any issues here can directly impact cruise control operation. Finally, test the cruise control module to confirm it is sending and receiving signals appropriately. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control issue in your Mazda CX-5.

What are the common problems that could cause the cruise control to stop working in a 2018 Mazda CX-5?

When troubleshooting cruise control issues in a 2018 Mazda CX-5, it's essential to understand the common problems that may lead to its failure. One of the primary culprits 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, speed sensor issues 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 problem is a blown fuse within the cruise control system, which can easily be checked and replaced to restore functionality. Throttle control malfunctions, particularly with the throttle position sensor, can also hinder the system's performance, as they affect the vehicle's ability to maintain speed. Furthermore, problems with the Electronic Control Module (ECM) can lead to broader issues within the cruise control system, as the ECM regulates its operation. Lastly, wiring problems, such as damaged or loose connections, can disrupt communication between components, resulting in a loss of functionality. By systematically addressing these common issues, you can effectively troubleshoot and potentially resolve cruise control problems in your Mazda CX-5.

How urgent is it to address the malfunctioning cruise control in my 2018 Mazda CX-5?

Addressing a malfunctioning cruise control in your 2018 Mazda CX-5 is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When cruise control fails, it can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which can endanger both you and other road users. Additionally, a malfunctioning system can negatively affect your fuel efficiency, making long drives less economical and more frustrating. Ignoring these symptoms can also lead to further complications, resulting in increased wear on your vehicle's components and potentially costly repairs down the line. Therefore, it is essential to prioritize the repair of your cruise control system to ensure a safe and efficient driving experience.

Related 2018 Mazda CX-5 Problems

Read about related problems experienced by other Mazda CX-5 drivers like you.

Mazda CX-5 traction control light activates at low speeds causing sluggish performance

Some Mazda CX-5 owners report experiencing sluggish performance when the traction control light activates at low speeds. This issue may indicate a trouble code stored in the traction control system, which is designed to maintain vehicle control when wheels lose traction. A common cause for the traction control light activation is faulty wheel speed sensors, which are essential for both the traction control and tire pressure monitoring systems. Additionally, a failing traction control module can trigger the TCS warning light, signaling a serious problem that requires immediate attention. Some owners also find that issues like faulty wheel bearings can affect wheel performance, leading to the activation of the traction control light when pressure is applied to the gas pedal. To mitigate these issues, it is advisable to check the wheel speed sensors, inspect the traction control module, and ensure that wheel bearings are in good condition. If problems persist, consulting a qualified mechanic is recommended to diagnose and resolve the underlying causes effectively.

1 model year affected

2 others reported problem

0 comments

Mitsubishi Diamante cruise control malfunction after drive line obstruction removal

Some Mitsubishi Diamante owners report experiencing cruise control malfunctions after removing a drive line obstruction, often linked to issues with the control module, sensor, or switch. These problems may stem from failed components that prevent the cruise control system from engaging or holding speed, despite power being available to the dash and fuse. Additionally, throttle actuation issues, such as a faulty throttle position sensor, can lead to the engine's computer overcompensating with fuel, which may result in black exhaust from the tailpipe. Owners are advised to thoroughly troubleshoot the cruise control system and inspect key components like the control module, sensor, and throttle to identify any damage or malfunction caused during the obstruction removal process.

4 model years affected

Avg Mileage: 1162,250

5 others reported problem

1 comment

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