2011 Subaru Legacy Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2011 Subaru Legacy and How to Fix Them

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Reviewed by
Aisha
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 2011 Subaru Legacy 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 steps to diagnose the non-functioning cruise control in a 2011 Subaru Legacy?

To effectively diagnose the non-functioning cruise control in your 2011 Subaru Legacy, start with the simplest solutions before progressing to more intricate checks. Begin by inspecting the cruise control fuse, as a blown fuse is a common and easily fixable issue. Consult your owner's manual for the fuse box diagram to locate the specific fuse for the cruise control system. If the fuse is intact, move on to examining the wiring and electrical connections, as any faults in these areas can disrupt the cruise control's functionality. Next, test the brake pedal switch by engaging the cruise control while holding the brake pedal up; if it activates, the switch may need adjustment. Additionally, check for mechanical issues, particularly if your vehicle has a mechanical cruise control system, as a damaged or disconnected cruise control cable can hinder performance. Lastly, inspect the throttle control system and verify the brake pedal switch's operation, as both are critical for the cruise control to function properly. By following this structured diagnostic approach, you can efficiently pinpoint the cause of the cruise control malfunction and take the necessary steps for repair.

How urgent is it to address the non-functioning cruise control in my 2011 Subaru Legacy?

When considering the urgency of fixing the non-functioning cruise control in your 2011 Subaru Legacy, it's essential to weigh the potential consequences of neglecting the issue. While the flashing cruise control light signals a mechanical or electrical problem that should not be ignored, it does not pose an immediate threat to your vehicle's safety or basic operation. The cruise control system enhances driving comfort, especially on long trips, but its absence does not compromise your ability to drive safely. However, if left unaddressed, the underlying issues—such as a faulty control module, sensor malfunctions, or electrical faults—could lead to more significant problems down the line. For DIY enthusiasts, troubleshooting these components can be a rewarding challenge, but if you're uncertain about the cause or lack the necessary tools, consulting a professional may be the best course of action. Ultimately, while it’s advisable to address the cruise control issue for optimal driving comfort, it is not an urgent repair in terms of safety.

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2011 Subaru Legacy Cruise Control Issues & Repair Costs