2019 Subaru Impreza Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Subaru Impreza 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 2019 Subaru Impreza 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 non-functioning cruise control in my 2019 Subaru Impreza?

To effectively diagnose the non-functioning cruise control in your 2019 Subaru Impreza, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue that can halt the system's operation. Next, examine the cruise control buttons on your steering wheel for any signs of damage or sticking, as these can prevent the system from engaging properly. Following this, verify the functionality of the speed sensor, which is crucial for the cruise control to operate correctly; a malfunction here can lead to significant issues. Additionally, check the brake pedal switch, since it is designed to disengage the cruise control when the brakes are applied; a faulty switch can be a hidden culprit behind the problem. If these initial checks do not reveal the issue, consider using an OBD-II scanner to identify any error codes that may provide insight into the malfunction. Should you still be unable to diagnose the problem, it may be wise to consult a professional mechanic who specializes in Subaru vehicles, as they can offer a more thorough diagnosis and repair any underlying issues. By following this structured diagnostic approach, you can efficiently identify and address the cause of your cruise control malfunction.

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

When troubleshooting cruise control issues in a 2019 Subaru Impreza, it's essential to consider several common problems that could be at play. One of the first components to check is the brake light switch, as a malfunction here can prevent the cruise control from engaging; this switch is designed to deactivate the system when the brake pedal is pressed. Additionally, the speed sensor plays a crucial role in maintaining a constant speed, and any issues with this sensor can lead to cruise control failure. It's also wise to inspect the fuses related to the cruise control system, as a blown fuse can completely disable its functionality. Furthermore, the cruise control module itself may be defective, hindering communication with other vehicle systems. Lastly, throttle-related issues, such as a stuck throttle or problems with the throttle position sensor, can significantly impact the cruise control's performance. By systematically checking these components, DIYers can often identify and resolve the issue without needing to consult a mechanic.

How urgent is it to address the malfunctioning cruise control in my 2019 Subaru Impreza?

When it comes to the malfunctioning cruise control in your 2019 Subaru Impreza, the urgency of addressing the problem cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which poses a significant safety risk, especially during highway driving or long trips. Ignoring these symptoms not only jeopardizes your safety but also that of other road users. Moreover, delaying repairs can exacerbate the issue, potentially leading to more extensive damage to the vehicle's electrical or mechanical systems, resulting in higher repair costs down the line. Therefore, it is crucial to prioritize the inspection and repair of your cruise control system, ideally by a qualified mechanic, to ensure your vehicle operates safely and efficiently. Taking prompt action will help you avoid accidents and maintain the overall integrity of your Subaru Impreza.

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