2022 Subaru Legacy Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2022 Subaru Legacy and How to Fix Them

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Reviewed by
Bo Fader
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 2022 Subaru Legacy 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 steps should I take to diagnose the cruise control issue in my 2022 Subaru Legacy?

To effectively diagnose the cruise control issue in your 2022 Subaru Legacy, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, examine the cruise control buttons on your steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. Following this, verify the speed sensor's performance, as it plays a crucial role in maintaining your vehicle's speed. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues affecting the cruise control system. Additionally, ensure that your brake lights are functioning correctly, as they are integral to the cruise control's operation. Finally, inspect the vacuum lines for any leaks or damage, as these can significantly impact the system's performance. By methodically following these steps, you can identify the root cause of the cruise control issue and take appropriate action to resolve it.

What are the common problems that could cause the cruise control to stop working in a 2022 Subaru Legacy?

When the cruise control in your 2022 Subaru Legacy ceases to function, it can be frustrating, but understanding the common issues can help you diagnose the problem. One frequent culprit is a faulty brake light switch, which is crucial for the cruise control system as it disengages the system when the brake pedal is pressed. If this switch malfunctions, it may prevent the cruise control from engaging at all. Another potential issue is related to the speed sensor; if this component fails, the cruise control may struggle to maintain a consistent speed, leading to erratic performance. Additionally, a blown fuse can completely disable the cruise control system, making it essential to check the fuse box for any blown fuses associated with the cruise control circuit. Throttle-related problems, such as a malfunctioning throttle position sensor or throttle body, can also hinder the system's ability to maintain speed. Lastly, electrical issues, including wiring problems or a faulty control module, can disrupt the cruise control's operation. By systematically checking these components, you can effectively troubleshoot and potentially resolve the cruise control issues in your Subaru Legacy.

How urgent is it to address the malfunctioning cruise control in my 2022 Subaru Legacy?

When it comes to your 2022 Subaru Legacy, addressing a malfunctioning cruise control system is not just a matter of convenience; it is a critical safety concern that requires immediate attention. A malfunctioning cruise control can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant risk while driving, particularly on highways where maintaining a steady speed is essential. The potential for loss of control over your vehicle's speed can increase the likelihood of accidents, making it imperative to resolve any issues as soon as they arise. Furthermore, neglecting this problem can adversely affect the overall performance and efficiency of your Subaru, leading to more extensive repairs down the line. By prioritizing the repair of your cruise control system, you not only ensure your safety but also protect your vehicle from further damage, ultimately preserving its longevity and reliability on the road.

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