2012 Ford Mustang Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2012 Ford Mustang and How to Fix Them

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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 2012 Ford Mustang 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 2012 Ford Mustang 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.

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 2012 Ford Mustang?

To effectively troubleshoot the non-functioning cruise control in your 2012 Ford Mustang, start with the simplest checks before moving on to more complex diagnostics. Begin by inspecting the fuses related to the cruise control system, as a blown fuse can often be the culprit behind the malfunction. Next, examine the brake pedal and throttle body for any signs of wear or damage, as these components play a crucial role in the operation of the cruise control. Additionally, check the vacuum lines connected to the intake and brake booster for leaks, since a vacuum leak can disrupt the system's functionality. Consulting your vehicle's manual will guide you to the fuse box location, allowing you to easily access and inspect the relevant fuses. Lastly, keep an eye out for common issues such as a defective brake pedal switch, which frequently leads to cruise control problems. By following these diagnostic steps, you can systematically identify and address the issue, potentially restoring your cruise control functionality without the need for professional assistance.

What are the common problems that could cause the cruise control to stop working in a 2012 Ford Mustang?

When dealing with cruise control issues in a 2012 Ford Mustang, it's crucial to understand the common problems that may arise. One of the primary culprits is a failed control module or sensor, which can disrupt the communication between the cruise control system and the vehicle's engine management. Additionally, throttle-related issues, such as a malfunctioning throttle position sensor, can prevent the cruise control from engaging or maintaining speed. Other potential causes include electrical problems, such as blown fuses or damaged wiring, which can interrupt the power supply to the cruise control system. By systematically checking these components, DIYers can effectively diagnose the root cause of the malfunction and take the necessary steps to restore the cruise control functionality.

How urgent is it to repair the non-functioning cruise control in a 2012 Ford Mustang?

Repairing the non-functioning cruise control in a 2012 Ford Mustang should be treated as a priority due to the various implications it carries. A malfunctioning cruise control system can lead to significant inconveniences during long drives, forcing the driver to constantly manage speed manually, which can be tiring and distracting. More critically, the failure of this system may signal underlying electrical problems or faulty components that, if ignored, could escalate into more severe issues, potentially compromising the vehicle's overall safety. For instance, if the malfunction stems from a blown fuse or a defective brake switch, it could disrupt other essential systems, leading to further complications. Additionally, a malfunctioning cruise control can result in erratic speed management, which not only affects fuel efficiency but also increases the risk of accidents. If the onboard computer detects an error related to the adaptive cruise control sensor, it is vital to address this promptly to ensure the safety features of the vehicle remain operational. Therefore, while the urgency may vary depending on the specific cause, timely repairs are crucial to maintain the Mustang's performance and ensure a safe driving experience.

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