2002 Subaru Forester Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2002 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 2002 Subaru Forester cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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.

What are the basic steps to diagnose cruise control issues in a 2002 Subaru Forester?

To effectively diagnose cruise control issues in your 2002 Subaru Forester, start with the simplest solutions before progressing to more intricate components. Begin by checking the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the control module, sensor, and switch for any visible faults, as these are common culprits in cruise control failures. It's also essential to examine the throttle actuation; ensure that the throttle operates smoothly and is free from obstructions. Don’t overlook the cruise control button and stalk on the steering column; verify that they are in good working condition. The brake pedal switch is another critical element, as it must function correctly to allow cruise control to engage. Lastly, if your model relies on vacuum control, inspect the vacuum lines for any disconnections or damage. By following this structured approach, you can systematically identify and resolve the issues affecting your cruise control system, making your DIY troubleshooting more efficient and effective.

What common issues cause cruise control failure in a 2002 Subaru Forester?

When diagnosing cruise control failure in a 2002 Subaru Forester, it's essential to consider several common problems that could be at play. One of the primary culprits is the control module, which can fail and disrupt the entire system. Additionally, issues with the throttle actuation or the throttle position sensor can lead to erratic behavior, such as the engine compensating incorrectly, which may result in black exhaust emissions. Electrical problems, particularly in the wiring that connects the actuator to the cruise control module, can also cause significant malfunctions. Furthermore, don't overlook the potential for vacuum issues; leaks or blockages in the vacuum lines can severely impact the cruise control's functionality. By systematically checking these areas, you can effectively diagnose and potentially resolve the cruise control issues in your Subaru Forester.

How urgent is it to address the non-functioning cruise control in a 2002 Subaru Forester?

While the non-functioning cruise control in a 2002 Subaru Forester does not pose an immediate safety risk, it can detract from the overall driving experience, particularly on long journeys. The absence of this feature may lead to increased fatigue, as drivers must maintain constant pressure on the accelerator pedal. Although the vehicle remains safe to operate, addressing the malfunction can enhance comfort and convenience, making it a worthwhile consideration for those who frequently undertake extended drives. Therefore, while it is not urgent, resolving the issue can significantly improve your driving experience and prevent potential complications that may arise from neglecting the system over time.

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