2021 Kia Sportage Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2021 Kia Sportage and How to Fix Them

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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 2021 Kia Sportage 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 2021 Kia Sportage 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.

When the vehicle speed sensor fails or the wiring harness prevents signal transmission, the speedometer is the first thing that will stop functioning properly. This can be an intermittent issue where the speedometer only works occasionally, the speedometer may cease all function, or the speedometer may read erratically or incorrectly. Also, the traction control and anti lock brake warning lights specific to each vehicle may be illuminated, depending on the design of those systems. You may notice the vehicle hesitate to accelerate, cruise control will not function properly, and the vehicle may not shift properly through all of the gears.

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 steps to diagnose the cruise control issue in a 2021 Kia Sportage?

To effectively diagnose a cruise control issue in a 2021 Kia Sportage, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown or damaged fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational and not stuck, as this can prevent engagement. Utilizing an OBD-II scanner to check for error codes is a crucial step, as it can reveal specific malfunctions within the cruise control system. Following this, inspect the speed sensors, which are vital for the system's operation, and test the brake pedal switch, since a malfunction here can deactivate cruise control. Lastly, ensure that all wiring connections related to the cruise control system are secure and undamaged. If these steps do not resolve the issue, it may be necessary to consult a professional mechanic for further assistance. This methodical approach not only helps in identifying the problem but also saves time and resources in the DIY diagnostic process.

What are the common problems that could cause the cruise control to stop working in a 2021 Kia Sportage?

When troubleshooting the cruise control system in a 2021 Kia Sportage, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch malfunctions, it can prevent the system from engaging properly. Additionally, issues with the speed sensor can disrupt the cruise control's functionality, as it relies on accurate speed readings to maintain the desired pace. Another potential issue is a blown fuse within the cruise control system; checking and replacing any blown fuses can often resolve the problem. Furthermore, a malfunction in the throttle control system can hinder the cruise control's ability to maintain a steady speed, while problems with the Electronic Control Module (ECM) can also affect its operation. By systematically addressing these common issues, you can effectively troubleshoot and potentially restore the cruise control functionality in your Kia Sportage.

How urgent is it to address the malfunctioning cruise control in a 2021 Kia Sportage?

When it comes to a malfunctioning cruise control system in your 2021 Kia Sportage, the urgency of addressing the problem cannot be overstated. A faulty cruise control can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. Ignoring these symptoms not only jeopardizes your safety but also that of other drivers and pedestrians. Moreover, delaying repairs can exacerbate the issue, potentially leading to more extensive damage to your vehicle's systems and resulting in costly repairs down the line. Therefore, it is crucial to consult a qualified mechanic or an authorized Kia service center as soon as you notice any irregularities with your cruise control. Taking prompt action ensures that the problem is diagnosed accurately and resolved effectively, safeguarding your driving experience and preventing further complications.

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