2019 Subaru Forester Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Subaru Forester 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 2019 Subaru Forester 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 2019 Subaru Forester?

When troubleshooting the non-functioning cruise control in your 2019 Subaru Forester, start with a systematic diagnostic approach to efficiently identify the problem. Begin by checking the cruise control fuse, as a blown fuse is a common and easily fixable issue that can disrupt the system. Next, verify the functionality of the cruise control switch; ensure it engages properly when activated. If these initial checks do not resolve the issue, examine the speed sensors, as they play a crucial role in the cruise control system's operation. Additionally, inspect the brake pedal switch, since a malfunction here can cause the cruise control to disengage unexpectedly. Finally, consider using a diagnostic scanner to check for any error codes that may provide further insight into the underlying issue. By following these steps, you can effectively diagnose and potentially resolve the cruise control problem in your Subaru Forester, saving time and money on repairs.

What are the common problems that could cause the cruise control to stop working in a 2019 Subaru Forester?

When troubleshooting cruise control issues in a 2019 Subaru Forester, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since it is designed to deactivate when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to failure. A blown fuse in the cruise control circuit is another simple yet often overlooked problem that can halt functionality; checking and replacing the fuse may quickly resolve the issue. Furthermore, a malfunction in the throttle control system, particularly with the throttle position sensor, can hinder the cruise control's performance. Lastly, if the Electronic Control Module (ECM) is experiencing problems, it can affect various vehicle functions, including cruise control. By systematically addressing these potential issues, you can effectively troubleshoot and restore the cruise control system in your Subaru Forester.

How urgent is it to address the malfunctioning cruise control in a 2019 Subaru Forester?

Addressing a malfunctioning cruise control system in a 2019 Subaru Forester is of utmost importance due to the inherent safety risks involved. When cruise control fails, it can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which can jeopardize the safety of both the driver and other road users. Ignoring these symptoms not only increases the likelihood of accidents but can also result in more extensive damage to the vehicle, leading to costly repairs down the line. For those considering a DIY approach, it is crucial to recognize that while some issues may seem minor, the potential for serious consequences makes prompt inspection and repair essential. Engaging a qualified mechanic or authorized service center is advisable to ensure that the cruise control system is thoroughly evaluated and restored to proper functioning, thereby safeguarding the vehicle's overall safety and performance.

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