2006 Mercury Monterey Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2006 Mercury Monterey and How to Fix Them

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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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2006 Mercury Monterey 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 2006 Mercury Monterey 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.

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 steps to diagnose the non-functioning cruise control in a 2006 Mercury Monterey?

To effectively diagnose the non-functioning cruise control in your 2006 Mercury Monterey, start by checking the fuses associated with the cruise control system, as a blown fuse is often the simplest issue to resolve. Next, inspect the brake pedal and throttle body, since any malfunction in these components can directly impact cruise control functionality. Consult your vehicle's manual to locate the fuse box in the engine bay, and carefully remove the cruise control fuse while ensuring the car is cold to avoid any electrical mishaps. If these initial checks do not reveal the problem, proceed to examine the control module, sensors, throttle, and switches for any signs of malfunction. Finally, be prepared to troubleshoot any electrical issues or faulty components that may be contributing to the cruise control failure. By following this structured approach, you can systematically identify and address the underlying issues affecting your vehicle's cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2006 Mercury Monterey?

When troubleshooting cruise control issues in a 2006 Mercury Monterey, it's essential to consider several common problems that may be at play. One of the first components to check is the brake pedal switch, as a faulty switch can prevent the cruise control from engaging properly. If the brake pedal is pressed, the system is designed to disengage, so any malfunction here can lead to significant issues. Additionally, the speed sensor plays a crucial role in maintaining a constant speed; if it is defective, the cruise control may fail to function correctly. Another potential culprit is a blown fuse, which can completely disable the cruise control system, making it necessary to replace the fuse to restore operation. Furthermore, vacuum leaks within the cruise control system can lead to erratic behavior or a total failure to maintain speed settings. Lastly, a malfunctioning cruise control module can also be responsible for these issues, and in such cases, replacement may be required. By systematically checking these components, DIYers can effectively diagnose and address the cruise control problems in their Mercury Monterey.

How urgent is it to address the non-functioning cruise control in a 2006 Mercury Monterey?

Addressing a non-functioning cruise control in a 2006 Mercury Monterey should be considered a priority, as neglecting this issue can lead to significant safety risks and potential vehicle damage. The cruise control system is designed to enhance driving comfort and efficiency, particularly on long trips, by maintaining a steady speed. When this feature fails, it may not only cause driver fatigue but also indicate deeper electronic or mechanical problems that could compromise the vehicle's overall performance. Ignoring the malfunction could result in erratic speed control, increasing the likelihood of accidents, especially on highways where cruise control is frequently utilized. Therefore, it is crucial to have the system inspected and repaired by a qualified mechanic to diagnose the underlying issues and ensure the vehicle remains safe and reliable on the road. Taking prompt action not only preserves the functionality of the cruise control but also contributes to the overall safety and performance of the vehicle.

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