2011 Toyota Prius Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2011 Toyota Prius and How to Fix Them

Find Repair Location
Reviewed by
Devin Cabugcal
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 2011 Toyota Prius cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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 2011 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 steps to diagnose the cruise control issue in a 2011 Toyota Prius?

To effectively diagnose cruise control issues in your 2011 Toyota Prius, begin by familiarizing yourself with the cruise control system's components, including sensors and actuators that manage speed regulation. Start your troubleshooting by checking for common causes such as a malfunctioning control module, sensor, or throttle issues. Inspect these components for any signs of damage or disconnection. Next, consult a detailed repair manual specific to your vehicle model, which will provide essential diagnostic parameters and pinout values for testing the cruise control system. Ensure that the cruise control activation is functioning properly, as problems with the cruise control switch circuit or stop light switch circuit can hinder activation. Additionally, check the fuse related to the cruise control system in the fuse box; if it's blown, replace it with one of the correct rating. Lastly, inspect the cruise control switch on the steering wheel for any faults. By following this structured approach, you can systematically identify and resolve the cruise control issues in your Prius, ensuring a smoother driving experience.

How urgent is it to address the malfunctioning cruise control in a 2011 Toyota Prius?

When it comes to the malfunctioning cruise control in a 2011 Toyota Prius, addressing the issue promptly is crucial for both safety and driving comfort. A malfunction can lead to discomfort during long drives, where maintaining a steady speed is essential. If you notice the cruise control indicator light flashing or if the system fails to activate, it’s a clear sign that professional attention may be necessary. Additionally, sporadic functionality of the cruise control buttons or an inability to engage the set button can indicate deeper issues that warrant investigation. A common first step in diagnosing these problems is to check for blown fuses, as this can disrupt the system's operation. Ignoring these symptoms could not only compromise your driving experience but also lead to more significant issues down the line. While modern cruise control systems are electric and less prone to vacuum leaks, understanding error codes like P0571 can provide valuable insights into specific malfunctions. Therefore, while it may not be an immediate emergency, timely attention to a malfunctioning cruise control system is essential for ensuring a safe and enjoyable driving experience.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.