2020 Kia Cadenza Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2020 Kia Cadenza

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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 2020 Kia Cadenza 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 2020 Kia Cadenza 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 2020 Kia Cadenza?

When diagnosing a cruise control issue in a 2020 Kia Cadenza, it's essential to adopt a systematic approach that begins with the simplest checks before progressing to more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can often be the root of the problem. Next, examine the cruise control buttons on the steering wheel to ensure they are functioning correctly and not stuck. If these initial checks do not reveal the issue, utilize an OBD-II scanner to identify any error codes that may indicate specific malfunctions within the system. Following this, inspect the speed sensors, as they are critical for the cruise control's operation. Additionally, check for any loose or damaged wiring connections that could disrupt the system's functionality. If all these components appear to be in good condition, test the cruise control module to confirm it is sending the correct signals. Should the problem persist after these steps, it may be time to consult a professional mechanic for a more thorough diagnosis and repair. This methodical approach not only helps in identifying the issue efficiently but also ensures that you cover all potential causes systematically.

What are the common problems that could cause the cruise control to stop working in a 2020 Kia Cadenza?

When dealing with cruise control issues in a 2020 Kia Cadenza, it's important to recognize several common problems that may be at play. A faulty cruise control switch is often the first suspect, as it can prevent the system from engaging or disengaging properly. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to function, making it a straightforward issue to check and replace if needed. Another critical component is the speed sensor; if it malfunctions, the cruise control may struggle to maintain a set speed, leading to erratic behavior. The brake light switch also plays a vital role, as it is designed to disengage the cruise control when the brakes are applied; any issues here can cause the system to fail unexpectedly. Lastly, problems with the throttle control system, particularly a faulty throttle position sensor, can significantly impact cruise control operation. By understanding these potential issues, DIYers can better diagnose and address the problems affecting their vehicle's cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2020 Kia Cadenza?

Addressing a malfunctioning cruise control in a 2020 Kia Cadenza is crucial for several reasons. First and foremost, a faulty cruise control system can lead to unexpected acceleration or deceleration, significantly increasing the risk of accidents on the road. This safety concern is paramount, especially during highway driving where maintaining a consistent speed is essential. Additionally, a malfunctioning system can detract from the overall driving experience, making long trips less comfortable and convenient. Ignoring these issues may also result in higher fuel consumption, as the vehicle struggles to maintain a steady speed, leading to unnecessary expenses at the pump. Furthermore, delaying repairs can exacerbate the problem, potentially causing further damage to the vehicle's systems and leading to more costly repairs down the line. Therefore, it is advisable to have any cruise control issues diagnosed and repaired promptly by a qualified mechanic to ensure the safety, efficiency, and longevity of your Kia Cadenza.

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2020 Kia Cadenza Cruise Control Issues & Repair Costs