2018 Kia Sedona Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Kia Sedona 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 2018 Kia Sedona 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 2018 Kia Sedona 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2018 Kia Sedona?

When troubleshooting the non-functioning cruise control in your 2018 Kia Sedona, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue that can disrupt the system. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can prevent the system from engaging properly. Following this, verify the functionality of the speed sensor, which is critical for the cruise control to operate; a malfunctioning sensor can lead to significant issues. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying problems affecting the cruise control system. Additionally, ensure that your brake lights are functioning correctly, as a faulty brake light switch can inadvertently disable the cruise control. Lastly, if your vehicle employs a vacuum-operated system, inspect the vacuum lines for leaks or damage that could impair performance. By methodically following these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Kia Sedona, paving the way for a smoother driving experience. If these checks do not yield results, seeking professional assistance may be necessary for more complex repairs.

What are the common problems that could cause the cruise control to stop working in a 2018 Kia Sedona?

When the cruise control in your 2018 Kia Sedona ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied; if this switch malfunctions, it may prevent the system from engaging at all. Additionally, issues with the speed sensor can disrupt the vehicle's ability to maintain a constant speed, leading to cruise control failure. Another potential problem is a blown fuse, which can interrupt the electrical flow necessary for the cruise control system to operate. If these components are functioning correctly, the cruise control module itself may be defective, requiring further inspection. Lastly, electrical problems, such as damaged wiring or poor connections, can also hinder the cruise control's performance. By identifying these common issues, you can take the first steps toward troubleshooting and potentially resolving the problem on your own.

How urgent is it to address the malfunctioning cruise control in a 2018 Kia Sedona?

When it comes to a malfunctioning cruise control system in a 2018 Kia Sedona, the urgency to address the problem cannot be overstated. A faulty cruise control can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which significantly increases the risk of accidents on the road. This is particularly concerning for drivers who rely on cruise control for long trips or highway driving, where maintaining a consistent speed is crucial for safety. Moreover, neglecting this issue may not only compromise your safety but could also lead to more extensive damage to the vehicle's electronic systems, resulting in higher repair costs down the line. Therefore, it is essential to prioritize the inspection and repair of the cruise control system, ideally by a qualified mechanic or dealership, to ensure that your vehicle operates safely and efficiently. Taking prompt action can help prevent potential hazards and ensure a smoother driving experience.

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