Mazda MX-6 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Mazda MX-6 and How to Fix Them

Find Repair Location
Reviewed by
Devin Cabugcal
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 Mazda MX-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 Mazda MX-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.

When the throttle position sensor fails, the engine's computer tends to overcompensate with fuel, leading black exhaust coming from the tailpipe. There is a strong possibility of engine misfires, and the check engine light will come on.

Throttle position sensors can also develop "dead spots," or certain places along the throttle curve where it doesn't get a reading. When this happens, the above symptoms can occur but then stop when you further press or let off the gas pedal.

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.

Troubleshooting Cruise Control Issues in a Mazda MX-6

When troubleshooting cruise control issues in your Mazda MX-6, begin with the simplest potential problems before delving into more complex diagnostics. Start by inspecting the fuses related to the cruise control system, as a blown fuse can easily disrupt functionality. Next, check the brake lights and the brake switch; if these components are malfunctioning, they can prevent the cruise control from engaging. If these initial checks do not resolve the issue, examine the control module, sensors, and switches for any signs of failure. Additionally, ensure that there are no engine-related problems, as a check engine light can inhibit cruise control operation. If your vehicle is equipped with ABS, inspect the ABS sensors and wiring for faults, as these can also affect cruise control performance. Lastly, confirm that the vehicle is in the correct gear position, as cruise control cannot be set in certain positions like P or N for automatic transmissions. By following this diagnostic approach, you can systematically identify and address the root cause of your cruise control issues.

What Could Cause the Cruise Control to Malfunction in a Mazda MX-6?

When dealing with cruise control malfunctions in a Mazda MX-6, it's essential to understand the common problems that may arise. A failed control module, sensor, or switch can disrupt the system's functionality, while throttle actuation issues may prevent the cruise control from maintaining speed. Additionally, a malfunctioning throttle position sensor can lead to overcompensation by the engine computer, often resulting in black exhaust emissions. If the cruise control disengages when using turn signals, this could indicate a deeper issue within the system. It's also crucial to check the cruise control fuse, as a blown fuse can halt operation entirely. Loose or disconnected electrical connectors, particularly those located inside the cabin, can further complicate matters. Corrosion or damage to the cruise control off switch and associated wiring may also contribute to malfunctions. In some cases, faulty ABS sensors or wiring issues can affect the cruise control if it relies on these components. Diagnosing these problems can be challenging without specialized tools, but a thorough inspection of these areas can help identify the root cause and guide you toward effective repairs.

Why is the Cruise Control Not Working in a Mazda MX-6?

When the cruise control in your Mazda MX-6 is not functioning, it’s crucial to address the issue promptly to ensure both your safety and the vehicle's performance. Common culprits include a failed control module, sensor malfunctions, or issues with the throttle actuation system. Additionally, if you notice that the cruise control disengages when you activate the turn signal, this could indicate electrical problems, such as a blown fuse or loose connectors. A malfunctioning brake pedal switch is another critical factor, as it can prevent the cruise control from engaging altogether. Furthermore, if your vehicle's cruise control relies on ABS sensors, any faults in these components can also disrupt functionality. Ignoring these symptoms not only compromises your driving experience but could also lead to more significant mechanical issues down the line. Therefore, it’s advisable to diagnose and resolve these problems as soon as they arise to maintain the safety and reliability of your Mazda MX-6.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.