2017 Subaru Outback Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 Subaru Outback 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 2017 Subaru Outback cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty or malfunctioning sensor can lead to incorrect readings, causing issues with engine performance or other systems relying on accurate data.
  • Control Module: A faulty control module can lead to 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 throttle 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 initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2017 Subaru Outback?

When troubleshooting the non-functioning cruise control in a 2017 Subaru Outback, it's essential to adopt a methodical diagnostic approach. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, verify the functionality of the cruise control switch; a malfunctioning switch may prevent the system from engaging. It's also crucial to inspect the vehicle's speed sensors, as faulty sensors can hinder the cruise control's ability to maintain speed. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the cruise control system. Additionally, ensure that the brake lights are operational, since non-functioning brake lights can inhibit cruise control activation. Lastly, inspect the vacuum lines for any leaks or damage, as these can also impact the system's performance. By following this structured approach, you can effectively identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2017 Subaru Outback?

When your 2017 Subaru Outback's cruise control stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty brake light switch, which is crucial for the cruise control system as it disengages when the brake pedal is pressed. If this switch is malfunctioning, it may prevent the cruise control from engaging at all. Another potential issue is related to the speed sensor; if this component is not accurately relaying speed information, the cruise control may fail to maintain a constant speed. Additionally, a blown fuse in the cruise control circuit can disrupt its operation, so checking the fuses is a simple first step. Problems with the throttle control system, such as a defective throttle position sensor, can also hinder the cruise control's performance. Lastly, vacuum leaks in the engine can affect the cruise control system's ability to function properly. By systematically checking these components, you can effectively troubleshoot and potentially resolve the cruise control issues in your Subaru Outback.

How urgent is it to address the malfunctioning cruise control in a 2017 Subaru Outback?

When it comes to a malfunctioning cruise control system in a 2017 Subaru Outback, the urgency of addressing the issue cannot be overstated. A malfunctioning system can lead to unexpected acceleration or deceleration, creating a significant safety hazard for both the driver and other road users. Promptly addressing this issue is crucial to prevent accidents that could arise from erratic vehicle behavior. Additionally, neglecting the problem may not only compromise safety but could also result in further damage to the vehicle's components, leading to more extensive and costly repairs down the line. Therefore, it is highly advisable to have the cruise control system inspected and repaired by a qualified mechanic or authorized service center as soon as symptoms arise. Taking swift action ensures the vehicle operates safely and efficiently, allowing for peace of mind while driving.

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