2015 Subaru Legacy Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 Subaru Legacy and How to Fix Them

Find Repair Location

Reviewed by

Devin Cabugcal

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 2015 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 2015 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 non-functioning cruise control in a 2015 Subaru Legacy?

Addressing the non-functioning cruise control in your 2015 Subaru Legacy should not be overlooked, as it can significantly impact your driving experience. While it may not pose an immediate safety risk, a malfunctioning cruise control system can lead to increased driver fatigue during long trips, making it essential for comfort and convenience. A flashing cruise control light is a clear indicator of underlying mechanical or electrical issues that require prompt attention. Common culprits include problems with the control module, sensors, or switches, which, if left unresolved, could escalate into more significant repairs and costs. Moreover, while the vehicle remains safe to drive without cruise control, ignoring the problem can lead to ongoing frustration, especially on highways where this feature is particularly beneficial. Therefore, it is advisable to diagnose and repair the issue in a timely manner to enhance your overall driving experience and ensure that your Subaru Legacy operates smoothly and efficiently.

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.

Find a Certified ShopThe largest certified network of auto repair shops

Get a Fair Price EstimateHundreds of repair estimates honored nationwide

Check for Safety RecallsUse VIN or license plate to see if your vehicle is affected

Exceptional warranty

Shops offer at least a 12-month or 12,000-mile warranty.

Satisfied customers

We ensure high satisfaction through verified customer reviews.

Transparent pricing

You'll get a Fair Price Guarantee on all RepairPal estimates.

Millions trust us for auto repair — RepairPal Certified^® locations must pass a rigorous approval process to ensure quality, customer satisfaction, and fair pricing.

Find a Repair Location