2010 Subaru Legacy Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2010 Subaru Legacy and How to Fix Them

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Reviewed by

Aisha

Written by RepairPal Car Genius

Updated January 14, 2025

30% chance it's the

Sensor

25% chance it's the

Control Module

25% chance it's the

Throttle

20% chance it's

Something else

The most common reasons a 2010 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 best Subaru repair shops?

RepairPal Certified shops can diagnose and repair your 2010 Subaru Legacy electronics and electrical issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

How urgent is it to address the malfunctioning cruise control in a 2010 Subaru Legacy?

Addressing a malfunctioning cruise control in a 2010 Subaru Legacy should not be taken lightly, as it can lead to more significant problems if left unresolved. While it may seem like a minor inconvenience, a malfunctioning cruise control system can indicate deeper issues within the vehicle's components, such as the control module or throttle. Ignoring these symptoms can result in performance problems, including erratic acceleration or inaccurate speed readings, which can compromise your safety on the road. The flashing cruise control light serves as a warning that there is a mechanical or electrical issue that requires immediate attention. Although it is generally safe to drive with a malfunctioning system, doing so may detract from your driving comfort, especially on long trips. Therefore, it is advisable to address these issues promptly to maintain optimal vehicle performance and ensure a safer driving experience.

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