2001 Mitsubishi Montero Sport Cruise Control Isn't Working

Fixing Cruise Control Malfunctions in 2001 Mitsubishi Montero Sport

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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 2001 Mitsubishi Montero Sport 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 2001 Mitsubishi Montero Sport 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.

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.

If the cruise control refuses to turn on at all, the actuator could be at fault. Likewise, if the cruise control stays on but does not maintain a consistent speed, the problem could be a bad actuator. In extreme cases, a malfunctioning actuator could cause the throttle to stick and prevent the vehicle from slowing down. These symptoms may point to a bad actuator. They may also point to other problems with the cruise control and related systems.

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-functioning cruise control in a 2001 Mitsubishi Montero Sport?

When troubleshooting the non-functioning cruise control in a 2001 Mitsubishi Montero Sport, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse in the fuse box; a blown fuse can often be the simplest explanation for the issue. Next, test the cruise control switch located on the steering wheel to ensure it is operational. If the switch is functioning, move on to the brake pedal switch, as this component must be in good working order for the cruise control to engage properly; a stuck or faulty brake switch can prevent activation. Additionally, inspect the vehicle speed sensor, which is critical for the cruise control system's performance, as it relays speed information to the system. Finally, if the previous steps do not reveal the problem, consider using a diagnostic scanner to check for any error codes that may indicate underlying issues. By following this structured approach, you can effectively identify and address the root cause of the cruise control malfunction.

What are the common problems that could cause the cruise control to stop working in a 2001 Mitsubishi Montero Sport?

When troubleshooting the cruise control system in a 2001 Mitsubishi Montero Sport, it's essential to consider several common problems that could be at play. A faulty cruise control switch is often the first suspect, as it directly controls the system's engagement. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to function, making it a straightforward issue to check. Vacuum leaks are another critical factor; they can significantly impair the system's performance by affecting the pressure needed for operation. Furthermore, a defective speed sensor can lead to incorrect speed readings, preventing the cruise control from maintaining the desired speed. It's also important to inspect the brake light switch, as any malfunction here can cause the cruise control to disengage unexpectedly when the brakes are applied. Lastly, issues with the throttle cable can hinder the system's ability to regulate speed effectively. By systematically examining these components, DIYers can identify and address the root cause of their cruise control issues.

How urgent is it to repair the non-functioning cruise control in a 2001 Mitsubishi Montero Sport?

When evaluating the urgency of repairing the non-functioning cruise control in a 2001 Mitsubishi Montero Sport, it is crucial to recognize the potential safety risks associated with a malfunctioning system. A properly functioning cruise control not only aids in maintaining a consistent speed, which is particularly beneficial during long drives, but it also minimizes the risk of sudden acceleration or deceleration that could endanger the driver and others on the road. Additionally, the convenience factor cannot be overlooked; without cruise control, drivers must constantly monitor and adjust their speed, which can lead to fatigue on extended journeys. Furthermore, from a financial perspective, a malfunctioning cruise control can negatively impact the vehicle's resale value, as prospective buyers may view it as a defect that requires repair. Therefore, while it may not seem like an immediate emergency, addressing the cruise control issue promptly is essential for ensuring safety, enhancing driving comfort, and preserving the vehicle's market value.

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