Mercury Montego Cruise Control Isn't Working

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

Find Repair Location
Reviewed by
Bo Fader
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 Mercury Montego 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 Mercury Montego 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.

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 Mercury Montego

When troubleshooting cruise control issues in your Mercury Montego, it's essential to adopt a systematic diagnostic approach. Start by checking the simplest potential problems, such as blown fuses, which can easily disrupt the power supply to the cruise control system. Next, inspect the brake lights, as a malfunctioning brake light can interfere with cruise control functionality. If these initial checks do not resolve the issue, examine the vacuum actuator and hoses, as any damage here can prevent the system from operating correctly. Additionally, consider the position of the brake pedal; an improper alignment may hinder the engagement of cruise control after braking. If all these steps fail to restore functionality, it may be time to seek professional assistance for a more thorough diagnosis. By following this structured approach, you can effectively identify and address the root causes of cruise control malfunctions in your vehicle.

Troubleshooting Cruise Control Issues in a Mercury Montego

When troubleshooting cruise control issues in a Mercury Montego, it's essential to understand the common problems that can arise within the system. One frequent issue is a blown fuse, which can interrupt the power supply to critical components like the cruise control switch and the vehicle speed sensor. Checking the fuse box for any blown fuses related to the cruise control system is a vital first step. Additionally, the functionality of the brake lights should not be overlooked, as a malfunctioning brake light can disrupt the cruise control operation. It's advisable to have someone assist you in checking the brake lights while you press the pedal. If the fuses and brake lights are functioning correctly, the next area to inspect is the vacuum actuator and its associated hoses, as damage or failure in these components can prevent the cruise control from engaging. Lastly, consider the position of the brake pedal; sometimes, adjusting it can resolve engagement issues. If these troubleshooting steps do not yield results, seeking professional assistance may be necessary to diagnose and repair any underlying problems effectively. By being aware of these common failure modes, you can take informed steps to troubleshoot and potentially resolve cruise control issues in your Mercury Montego.

Why is the Cruise Control Not Working in a Mercury Montego?

When the cruise control in your Mercury Montego fails to operate, it’s crucial to address the issue without delay. Ignoring symptoms such as erratic acceleration or the inability to maintain speed can not only compromise your driving experience but also pose significant safety risks on the road. A malfunctioning cruise control system may be linked to various underlying problems, including a faulty control module, issues with the throttle position sensor, or even a blown fuse. Additionally, if the brake pedal switch is defective, it could inadvertently disable the cruise control, leading to unexpected deceleration. These issues can escalate if left unchecked, potentially resulting in more severe engine problems or costly repairs. Therefore, it’s advisable to conduct a thorough inspection of the cruise control system and its components to ensure safe and reliable vehicle operation. Taking prompt action can help you avoid dangerous situations and maintain the performance of your Mercury Montego.

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.