2013 Toyota Prius Plug-In Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2013 Toyota Prius Plug-In 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 2013 Toyota Prius Plug-In 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 2013 Toyota Prius Plug-In 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 2013 Toyota Prius Plug-In?

To effectively diagnose a cruise control issue in a 2013 Toyota Prius Plug-In, it's essential to adopt a systematic approach that begins with the simplest checks before progressing to more complex diagnostics. Start by examining the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control switch located on the steering wheel; a malfunctioning switch can often be the culprit behind cruise control problems. If these initial checks do not reveal the issue, utilize an OBD-II scanner to identify any error codes that may indicate specific faults within the cruise control system. Following this, assess the vehicle speed sensor, since a faulty sensor can prevent the cruise control from maintaining speed. Additionally, ensure that the brake pedal switch is functioning correctly, as this switch is designed to disengage cruise control when the brake is applied. Finally, test the cruise control module to confirm it is sending the appropriate signals to the engine and transmission. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control issue in your Prius Plug-In.

What are the common problems that could cause the cruise control to stop working in a 2013 Toyota Prius Plug-In?

When troubleshooting the cruise control system in a 2013 Toyota Prius Plug-In, it's essential to consider several common problems that could be at play. One of the first areas to check is the brake light switch, as a faulty switch can prevent the cruise control from engaging, since the system 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 cruise control failure. Another critical component to inspect is the throttle actuator, which adjusts the engine's throttle based on the cruise control settings; any malfunction here can hinder performance. Furthermore, the cruise control module itself may be defective, which is a common issue that can affect functionality. Lastly, don't overlook potential electrical problems, such as blown fuses or wiring issues, which can also interfere with the cruise control system. By systematically checking these components, DIYers can identify and address the root cause of the cruise control malfunction.

How urgent is it to address the malfunctioning cruise control in my 2013 Toyota Prius Plug-In?

When it comes to your 2013 Toyota Prius Plug-In, the urgency of addressing a malfunctioning cruise control system cannot be overstated. A faulty cruise control can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. This safety concern is compounded by the potential for decreased fuel efficiency, as a malfunctioning system may cause your vehicle to consume more fuel than necessary. Moreover, neglecting this issue can lead to further complications, potentially damaging other components of your vehicle and resulting in more costly repairs down the line. Therefore, it is crucial to prioritize the repair of your cruise control system not only to ensure your safety but also to maintain the overall performance and longevity of your Prius Plug-In. Taking prompt action can help you avoid serious consequences and keep your vehicle running smoothly.

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