2019 Hyundai Ioniq Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 Hyundai Ioniq 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 2019 Hyundai Ioniq 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 2019 Hyundai Ioniq 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.

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 2019 Hyundai Ioniq?

When diagnosing a cruise control issue in a 2019 Hyundai Ioniq, it's essential to adopt a systematic approach that begins with the simplest checks before progressing to more complex diagnostics. Start by examining the cruise control fuse, as a blown fuse can easily disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, since faulty buttons can lead to engagement problems. Utilizing an OBD-II scanner to check for error codes is a crucial step, as these codes can reveal underlying issues within the cruise control system. Following this, verify the speed sensors, which are vital for the cruise control's operation; any malfunction here can directly affect performance. Additionally, inspect the wiring connections for signs of damage or corrosion, as poor connections can hinder the system's effectiveness. Finally, test the cruise control module itself to confirm it is functioning correctly, as a defective module can prevent the cruise control from engaging altogether. By methodically following these steps, you can effectively identify and address the root cause of the cruise control issue in your Hyundai Ioniq.

What are the common problems that could cause the cruise control to stop working in a 2019 Hyundai Ioniq?

When the cruise control in your 2019 Hyundai Ioniq stops functioning, 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 can disrupt the system's ability to engage or disengage properly. Additionally, issues with the speed sensor may lead to incorrect speed readings, causing the cruise control to malfunction. A blown fuse in the cruise control circuit can also prevent the system from operating, so checking the fuses is a good first step. Furthermore, if there are problems with the throttle control system, it may hinder the cruise control from maintaining the desired speed. Lastly, any electrical issues, such as damaged wiring or a malfunctioning control module, can significantly impact the cruise control's performance. By systematically checking these areas, you can effectively troubleshoot and potentially resolve the cruise control issues in your Hyundai Ioniq.

How urgent is it to address the malfunctioning cruise control in a 2019 Hyundai Ioniq?

When dealing with a malfunctioning cruise control in a 2019 Hyundai Ioniq, it is crucial to recognize the urgency of the situation. Ignoring symptoms such as erratic speed changes or unresponsive controls can lead to serious safety risks, including unexpected acceleration or deceleration that may result in accidents. Additionally, a faulty cruise control system can significantly detract from your driving experience, making it challenging to maintain a steady speed and increasing driver frustration. Beyond immediate safety concerns, neglecting this issue can also affect the overall performance and efficiency of your vehicle, potentially leading to more extensive and costly repairs down the line. Therefore, addressing cruise control malfunctions promptly is essential not only for your safety but also for the longevity and reliability of your Hyundai Ioniq.

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