2014 Toyota Prius C Cruise Control Not Working

Troubleshooting Common Issues with Cruise Control in Your 2014 Toyota Prius C and How to Fix Them

Find Repair Location
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 2014 Toyota Prius C 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 2014 Toyota Prius C 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 take when the cruise control is not working on a 2014 Toyota Prius C?

When faced with a non-functioning cruise control system in your 2014 Toyota Prius C, start by ensuring that the system is properly activated. Sometimes, the simplest solution is to check if the cruise control is turned on and that the vehicle is traveling at the required minimum speed for engagement. If the system activates but cancels immediately, look for any warning lights on the dashboard that may indicate a malfunction. Next, inspect the vehicle's electrical system, particularly the fuses associated with the cruise control, to rule out any blown fuses. Additionally, verify that all related sensors, including radar or camera sensors for adaptive cruise control, are free from obstructions and functioning correctly. It's also crucial to check the brake system, as any issues here can lead to the cruise control disengaging unexpectedly. For more detailed troubleshooting, consult your owner's manual, which may provide specific guidance tailored to your vehicle. If these initial checks do not resolve the issue, consider seeking assistance from a professional mechanic who can perform a thorough diagnostic using specialized tools. By following this structured approach, you can effectively identify and address common problems with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2014 Toyota Prius C?

When dealing with cruise control issues in a 2014 Toyota Prius C, it's essential to understand the common problems that may arise. One frequent culprit is a sticking or mis-adjusted brake light switch, which can prevent the cruise control from engaging. This switch is crucial for the system's operation, and adjusting or replacing it can often restore functionality. Another potential issue is a faulty clock spring, which is responsible for the electrical connections in the steering wheel. If the cruise control buttons are unresponsive, replacing the clock spring may be necessary, though it requires careful disassembly of the steering wheel. Additionally, problems with the cruise control switch or button itself can lead to malfunctions, often due to worn contacts or internal electrical issues. Inspecting and possibly soldering or replacing the switch can resolve this. Loose or disconnected wire connectors within the cruise control system can also disrupt operation, so checking these connections, particularly in the lower dash area, is advisable. For models equipped with dynamic radar cruise control, ensure that the radar sensor is clean and unobstructed, as any malfunction here can affect system performance. Lastly, issues related to the airbag and steering wheel assembly can impact cruise control functionality, so verifying that all connections are secure is crucial. By systematically checking these areas, DIYers can often identify and fix the underlying problems affecting their Prius C's cruise control system.

How urgent is it to address the malfunctioning cruise control in my 2014 Toyota Prius C?

Addressing the malfunctioning cruise control in your 2014 Toyota Prius C is of significant urgency due to the potential safety risks and the possibility of further vehicle damage. A faulty brake pedal switch, a common culprit behind cruise control issues, can create confusion regarding brake engagement, which may prevent the system from disengaging when necessary. This poses a serious safety hazard, especially in critical driving situations. Additionally, problems with speed sensors or ABS components can compromise not only the cruise control but also other essential systems like the speedometer and stability control, making it imperative to diagnose and resolve these issues promptly. While the inconvenience of a malfunctioning cruise control may seem minor, it can lead to driver fatigue during long trips, indirectly affecting overall safety. Moreover, neglecting electrical problems, such as a blown fuse or issues with the 12v battery, can escalate into more severe and costly repairs. Therefore, it is crucial to have a qualified mechanic assess the situation as soon as possible to identify the root cause and ensure your vehicle remains safe and functional on the road.

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.