2020 Toyota Yaris Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2020 Toyota Yaris 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 2020 Toyota Yaris 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.

How much does it cost to fix a 2020 Toyota Yaris cruise control isn't working?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

What are the steps to diagnose the cruise control issue in a 2020 Toyota Yaris?

When diagnosing a cruise control issue in a 2020 Toyota Yaris, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to malfunctions. Following this, examine the speed sensors, as they play a crucial role in maintaining the set speed; any malfunction here can hinder the cruise control's performance. Utilizing a diagnostic scanner to check for error codes in the vehicle's computer system can provide insights into underlying issues. Additionally, inspect the vacuum lines for any leaks or damage, as these can significantly affect the cruise control's operation. Finally, test the cruise control module itself to confirm it is functioning correctly. By methodically following these steps, you can effectively identify and address the root cause of the cruise control problem in your Yaris.

What are the common problems that could cause the cruise control to stop working in a 2020 Toyota Yaris?

When the cruise control in your 2020 Toyota Yaris ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue effectively. One of the primary culprits is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch malfunctions, it may prevent the system from engaging at all. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain a steady speed, leading to erratic performance or complete failure. Another potential problem could be a blown fuse within the cruise control system, which can halt its operation entirely. Furthermore, a faulty cruise control module may fail to communicate with other vehicle systems, resulting in malfunction. Lastly, if the throttle actuator is not functioning correctly, it can impede the cruise control's ability to adjust engine speed as needed. By systematically checking these components, you can identify and resolve the issues affecting your cruise control system, allowing you to enjoy a smoother driving experience once again.

How urgent is it to address the malfunctioning cruise control in my 2020 Toyota Yaris?

When it comes to your 2020 Toyota Yaris, addressing a malfunctioning cruise control system is not just a matter of convenience; it is a critical safety concern. A malfunction can lead to unexpected acceleration or deceleration, which significantly increases the risk of accidents on the road. Moreover, the constant need to manually control your speed can distract you from other important driving tasks, leading to driver fatigue and reduced focus. Ignoring these symptoms can also result in decreased fuel efficiency and accelerated wear on your vehicle's components, ultimately leading to more costly repairs down the line. Therefore, it is essential to prioritize the diagnosis and repair of your cruise control system to ensure your safety, maintain your vehicle's performance, and enhance its longevity. Taking action promptly can prevent minor issues from escalating into major problems, making it a wise decision for any DIY enthusiast or vehicle owner.

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