2012 Scion TC Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2012 Scion tC and How to Fix Them

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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 2012 Scion tC 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 2012 Scion tC 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 steps should I take to diagnose the non-functioning cruise control in my 2012 Scion tC?

To effectively diagnose the non-functioning cruise control in your 2012 Scion tC, start by checking the basics to ensure the system is activated and the dashboard indicator is operational. Next, inspect the fuse box for any blown fuses related to the cruise control; replacing these with the correct amperage can often resolve the issue. Following this, test the cruise control switch on the steering wheel for responsiveness, as a faulty switch can hinder functionality. Utilizing an OBD-II scanner to check for error codes can provide further insights into potential problems. Additionally, examine the brake and clutch pedal switches to confirm they are engaging properly, as malfunctioning switches can prevent activation. Finally, inspect the throttle cable and linkage for any signs of wear or disconnection, as these components are vital for maintaining speed. By systematically following these steps, you can effectively identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2012 Scion tC?

When dealing with cruise control issues in a 2012 Scion tC, it's essential to understand the common problems that may be at play. One frequent culprit is a blown fuse, which can easily be checked and replaced if necessary. Additionally, the cruise control switch located on the steering wheel may become faulty, preventing the system from engaging; replacing this switch could restore functionality. Another potential issue lies with the vehicle's speed sensor; if it fails to accurately relay speed information, the cruise control may disengage unexpectedly. Furthermore, a malfunctioning brake light switch can disrupt the cruise control system, as it is designed to turn off when the brake pedal is pressed. Lastly, problems with the throttle cable or linkage can hinder the cruise control's ability to maintain speed. By systematically checking these components, DIYers can effectively troubleshoot and resolve cruise control malfunctions in their Scion tC.

How urgent is it to address the malfunctioning cruise control in a 2012 Scion tC?

When it comes to a malfunctioning cruise control system in a 2012 Scion tC, the urgency to address the problem cannot be overstated. A faulty cruise control can lead to unexpected acceleration or deceleration, creating a significant safety hazard for both the driver and other road users. Ignoring these symptoms not only increases the risk of accidents but can also result in further damage to the vehicle, leading to more extensive and costly repairs down the line. For DIY enthusiasts, it is crucial to recognize that while some issues may seem minor, they can escalate quickly if not handled promptly. Therefore, if you notice any irregularities with your cruise control, it is advisable to conduct a thorough inspection or consult a qualified mechanic to ensure the system is functioning correctly. Taking swift action not only enhances your safety but also preserves the overall performance and longevity of your vehicle.

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