2008 Mitsubishi Eclipse Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2008 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 2008 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 2008 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 2008 Mitsubishi Eclipse?

When faced with a non-functional cruise control in a 2008 Mitsubishi Eclipse, it's crucial to adopt a systematic diagnostic approach. Start by checking the fuse associated with the cruise control system; a blown fuse is a common and easily fixable issue that can prevent the system from operating. Next, ensure that the cruise control settings are correctly configured according to the owner's manual, as incorrect settings can lead to functionality problems. It's also important to examine the brake lights, as a malfunctioning brake light switch can inhibit the cruise control from engaging. Additionally, inspect the speed sensors, since any faults here can directly impact the cruise control's performance. Finally, using a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the cruise control system. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control malfunction in your Mitsubishi Eclipse.

What are the common problems that could cause the cruise control to stop working in a 2008 Mitsubishi Eclipse?

When addressing cruise control issues in a 2008 Mitsubishi Eclipse, understanding the common problems that may arise is crucial for effective DIY troubleshooting. One of the primary culprits is a faulty cruise control switch, which can prevent the system from engaging as intended. It's also important to check for a blown fuse, as this can completely disable the cruise control functionality. Additionally, vacuum leaks can disrupt the necessary pressure, leading to malfunctions. A defective speed sensor is another potential issue, as it may cause the cruise control to disengage unexpectedly. Problems with the brake light switch can also prevent activation, while a malfunctioning throttle cable can impact the system's ability to maintain speed. By carefully examining these components, you can pinpoint the issue and take the necessary steps to restore your cruise control system.

How urgent is it to address the non-functioning cruise control in a 2008 Mitsubishi Eclipse?

Addressing a non-functioning cruise control in a 2008 Mitsubishi Eclipse is important for both safety and vehicle performance. While it may not seem like an immediate emergency, neglecting this issue can lead to significant inconveniences, especially during long drives where cruise control is typically utilized. A malfunctioning cruise control system may indicate deeper problems within the vehicle's electrical system or sensors, which, if left unchecked, could escalate into more serious and costly repairs. Moreover, the absence of this feature can increase driver fatigue and reduce fuel efficiency, making it essential to resolve the issue promptly. For those considering a DIY approach, it is advisable to start by checking the fuses and connections related to the cruise control system, as these are common culprits. However, for a thorough diagnosis and repair, consulting a qualified mechanic or dealership is recommended to ensure that any underlying issues are properly addressed, ultimately safeguarding the vehicle's health and enhancing the driving experience.

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