Subaru Forester Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Subaru Forester and How to Fix Them

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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 Subaru Forester 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.

Troubleshooting Cruise Control Issues in a Subaru Forester

When troubleshooting cruise control issues in your Subaru Forester, begin with the basics to efficiently identify the problem. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system. Refer to your owner's manual for the exact location and specifications. If the fuse is intact, inspect the control module, sensors, and switches for any visible signs of damage or wear. A blinking cruise control light often indicates a malfunction, so pay attention to any error codes that may arise. Next, examine the throttle actuation system, as issues here can prevent the cruise control from functioning correctly. If you have Adaptive Cruise Control, consider that its complexity may require specialized knowledge, so don’t hesitate to consult a factory-trained technician if basic troubleshooting doesn’t resolve the issue. By systematically addressing these areas, you can effectively diagnose and potentially fix the cruise control problems in your Subaru Forester.

What Could Cause Cruise Control Issues in a Subaru Forester?

When dealing with cruise control issues in a Subaru Forester, it's essential to understand the common problems that may arise within the system. A failed control module, malfunctioning sensors, or faulty switches are often at the root of these issues, leading to an unreliable cruise control experience. Additionally, throttle actuation problems can disrupt the system's functionality, while a failing throttle position sensor may cause the engine's computer to mismanage fuel delivery, potentially resulting in black exhaust emissions. If you notice the cruise control light flashing, it could signal various underlying issues that require immediate attention. Fortunately, there are troubleshooting steps and potential solutions available to help diagnose and resolve these problems. It's crucial to address any cruise control malfunctions promptly, as the Subaru Forester's design includes failsafes that allow for safe driving even when the cruise control system is not operational. By understanding these common problems, you can take proactive measures to maintain the performance and safety of your vehicle.

Why is the Cruise Control Not Working in a Subaru Forester?

When the cruise control in your Subaru Forester malfunctions, it’s crucial to address the issue promptly to avoid potential safety hazards and further mechanical complications. A failed control module, sensor, or switch can lead to erratic vehicle behavior, which may compromise your control while driving. Additionally, problems with throttle actuation, such as a faulty throttle position sensor, can cause the engine to overcompensate, resulting in excessive fuel consumption and black exhaust emissions. Ignoring these symptoms not only affects your vehicle's performance but can also lead to more significant repairs down the line. Start by checking the cruise control fuse, as a blown fuse is a simple fix that could restore functionality. However, if the problem persists, it’s advisable to consult a factory-trained technician who can accurately diagnose and resolve the underlying issues. Ensuring that all components related to the cruise control system are functioning correctly is essential for safe driving, making it imperative to act swiftly when you notice any signs of malfunction.

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