2009 Mitsubishi Eclipse Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2009 Mitsubishi Eclipse and How to Fix Them

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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 2009 Mitsubishi Eclipse 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 2009 Mitsubishi Eclipse 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 vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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-functional cruise control in a 2009 Mitsubishi Eclipse?

When faced with a non-functional cruise control in your 2009 Mitsubishi Eclipse, it's important to approach the diagnosis methodically. Start by checking the cruise control fuse in the fuse box; a blown fuse can often be the simplest fix. Next, examine the cruise control switch located on the steering wheel to ensure it is operational and free from damage. The brake pedal switch is another critical component to inspect, as a malfunction here can prevent the cruise control from engaging. Additionally, verify that the vehicle speed sensor is functioning correctly, as it is integral to the cruise control system's operation. Finally, using a diagnostic scanner to check for any error codes can provide further insights into the problem. By following these steps, you can systematically identify and address the issues affecting your cruise control system, making it a manageable DIY project.

What are the common problems that could cause the cruise control to stop working in a 2009 Mitsubishi Eclipse?

When troubleshooting cruise control issues in a 2009 Mitsubishi Eclipse, it's essential to understand the common problems that may be at play. A faulty cruise control switch is often the first suspect, as it can hinder the system's ability to engage or disengage properly. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to function, making it a straightforward fix. Vacuum leaks are another critical factor; they can interfere with the system's operation by affecting the pressure needed for proper functionality. Furthermore, a defective speed sensor can lead to incorrect speed readings, which may prevent the cruise control from maintaining the desired speed. The brake light switch also plays a vital role, as a malfunction here can prevent the cruise control from engaging due to safety protocols. Lastly, issues with the throttle cable, such as fraying or stretching, can significantly impact the system's performance. By identifying these potential problems, DIY enthusiasts can better diagnose and address the cruise control issues in their Mitsubishi Eclipse, ensuring a smoother driving experience.

How urgent is it to repair the non-functioning cruise control in a 2009 Mitsubishi Eclipse?

When evaluating the urgency of repairing the non-functioning cruise control in your 2009 Mitsubishi Eclipse, it's essential to recognize that while it may not pose an immediate safety threat like brake failure, it still warrants timely attention. The absence of cruise control can lead to increased driver fatigue, especially during long highway drives, as it removes the convenience of maintaining a steady speed. This can distract the driver, potentially compromising safety on the road. Additionally, a functioning cruise control system enhances the overall driving experience, making long trips more comfortable. Furthermore, if you plan to sell or trade in your vehicle, having a fully operational cruise control can positively impact its resale value. Therefore, while it may not be an emergency, addressing the cruise control issue promptly is advisable to ensure a safer, more enjoyable driving experience and to help maintain your vehicle's worth.

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