2005 Subaru Outback Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2005 Subaru Outback and How to Fix Them

Find Repair Location
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 2005 Subaru Outback 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 first steps to diagnose cruise control issues in a 2005 Subaru Outback?

When diagnosing cruise control issues in a 2005 Subaru Outback, start by checking the dashboard lights to ensure they illuminate when the ignition is on, as this indicates the system is receiving power. Next, investigate common problems such as throttle sensor failures, which are known to affect cruise control functionality. If the cruise control has been problematic since acquiring the vehicle, consider reviewing its service history for any previous repairs that might relate to the issue. Pay attention to specific conditions that trigger the malfunction, such as prolonged driving or adverse weather, as these can provide clues to the underlying problem. If these initial checks do not resolve the issue, it may be wise to consult a professional mechanic for a more detailed diagnosis, ensuring that you address the problem effectively and safely.

What causes cruise control failure in a 2005 Subaru Outback?

When dealing with cruise control failure in a 2005 Subaru Outback, it's crucial to understand the common problems that may be at play. One of the primary culprits is the throttle sensor, which can malfunction and disrupt the cruise control system's ability to maintain speed. Additionally, the cruise control switch itself may fail, leading to either a complete loss of functionality or intermittent issues. Electrical problems, such as faulty wiring outside the fuse box, can also hinder the system's performance. For those with adaptive cruise control, the camera associated with the EyeSight suite can become dirty or obstructed, affecting its operation. Furthermore, if the check engine light is illuminated, the cruise control will automatically disable until the underlying issue is addressed. By identifying these potential causes, DIYers can effectively diagnose and fix cruise control issues, restoring functionality to their Subaru Outback.

How urgent is it to address the non-functioning cruise control in a 2005 Subaru Outback?

While the non-functioning cruise control in your 2005 Subaru Outback may not pose an immediate safety risk, it is still advisable to address the issue for a more enjoyable driving experience. A malfunctioning cruise control can lead to frustration during long drives, as it eliminates the convenience of maintaining a steady speed without constant pedal pressure. Additionally, neglecting this problem could potentially affect other vehicle performance aspects, such as acceleration and the accuracy of your speedometer. Therefore, while you can safely operate your vehicle without cruise control, taking the time to diagnose and repair the system can enhance your comfort and convenience on the road, making it a worthwhile DIY project.

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.