Kia Forte Koup Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Kia Forte Koup 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
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25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a Kia Forte Koup 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 Kia Forte Koup 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.

Troubleshooting Cruise Control Issues in a Kia Forte Koup

When troubleshooting cruise control issues in a Kia Forte Koup, it's essential to adopt a systematic diagnostic approach that begins with the simplest solutions before progressing to more complex ones. Start by checking the control module, as this is often a primary culprit in cruise control malfunctions. Next, inspect the sensors associated with the cruise control system, as sensor failures can disrupt functionality. Pay attention to the throttle as well, since any issues here can directly affect how the cruise control operates. If you experience intermittent functionality, consider whether the brake pedal is being inadvertently engaged, as this can deactivate the system. Additionally, if you notice RPM fluctuations when activating cruise control, it may indicate a deeper issue that requires further investigation. Lastly, if the "SET" button fails to illuminate, it could signal a problem with the control module or wiring. By following this methodical approach, you can effectively identify and resolve the issues affecting your Kia Forte Koup's cruise control system.

What Could Cause the Cruise Control to Malfunction in a Kia Forte Koup?

When dealing with cruise control malfunctions in a Kia Forte Koup, it's essential to understand the common problems that may arise. One frequent culprit is the failure of the throttle position sensor, which can cause the engine's computer to mismanage fuel delivery, often resulting in black exhaust emissions. Additionally, issues with the control modules or switches can disrupt the cruise control system's functionality. Another common problem is the brake switch failure, particularly noted in earlier Kia models, which can inadvertently signal the system to disengage. By identifying these potential failure points, DIYers can systematically troubleshoot the cruise control system, ensuring a more effective and efficient repair process.

Why is the Cruise Control Not Working in a Kia Forte Koup?

When your Kia Forte Koup's cruise control system fails, it’s crucial to address the issue promptly, as neglecting it can lead to safety risks and further vehicle damage. Common causes of cruise control malfunction include a failed control module, sensor, or switch, which can disrupt the system's operation. Additionally, throttle actuation problems and a faulty throttle position sensor may not only impair cruise control but also affect engine performance, potentially resulting in excessive fuel consumption and black exhaust. It's also important to check for a blown fuse related to the cruise control system, as well as the condition of the brake light switch. If the brake lights are stuck on, this can prevent the cruise control from engaging, posing a significant safety hazard. Given these potential issues, it’s advisable to troubleshoot and resolve any cruise control problems as soon as they arise to ensure safe driving and maintain the overall health of your vehicle.

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Kia Forte Koup Cruise Control Not Working | RepairPal