2007 Toyota Prius Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2007 Toyota Prius and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2007 Toyota Prius 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 2007 Toyota Prius 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.

The cruise control switch can cause complete failure of the cruise control feature, but in a lucky scenario only partial functionality will be lost. This means that the cruise control may come on, but that it will not increase in speed automatically, or the cancel button does not work leading the driver to cancel cruise control with the foot brake. In some vehicles, the cruise control light may illuminate, or a warning message may be displayed due to lack of functionality.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2007 Toyota Prius?

When troubleshooting the non-functioning cruise control in a 2007 Toyota Prius, it's essential to adopt a systematic diagnostic approach. Begin by checking 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, inspect the cruise control buttons on the steering wheel to ensure they are functioning correctly; sometimes, the buttons may become unresponsive due to wear or internal faults. Following this, verify the speed sensor, which is critical for the cruise control system to operate; a malfunctioning speed sensor can prevent the system from engaging. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues affecting the cruise control. Additionally, examine the brake lights, as a faulty brake light switch can inadvertently disable the cruise control. Lastly, inspect the wiring and connections associated with the cruise control system for any signs of damage or corrosion, as these can disrupt functionality. By methodically following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Prius.

What are the common problems that could cause the cruise control to stop working in a 2007 Toyota Prius?

When troubleshooting cruise control issues in a 2007 Toyota Prius, 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 the system is designed to disengage when the brake pedal is pressed. Additionally, a defective cruise control module can lead to the system failing to operate correctly, while a blown fuse related to the cruise control can also stop it from functioning altogether. It's also important to consider throttle control issues, such as a stuck throttle or problems with the throttle position sensor, as these can significantly impact the cruise control's performance. Lastly, a malfunctioning vehicle speed sensor can disrupt the system's ability to maintain a set speed. By systematically checking these components, you can effectively diagnose and potentially resolve the cruise control problems in your Prius.

How urgent is it to address the malfunctioning cruise control in my 2007 Toyota Prius?

When it comes to the malfunctioning cruise control in your 2007 Toyota Prius, urgency is paramount. A faulty system can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. This unpredictability not only increases the risk of accidents but also contributes to driver distraction and fatigue, as you may find yourself constantly adjusting your speed manually. Moreover, neglecting this issue can result in higher fuel consumption and may even cause damage to other vehicle components, leading to more costly repairs down the line. By addressing the malfunction promptly, you not only enhance your safety but also help maintain the overall performance and efficiency of your Prius. Therefore, it is crucial to have the issue diagnosed and repaired by a qualified mechanic as soon as possible to ensure a safe and smooth driving experience.

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Troubleshooting 2007 Toyota Prius Cruise Control Problems