2021 Hyundai Accent Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2021 Hyundai Accent 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
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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 2021 Hyundai Accent 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 Hyundai Accent 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 Hyundai Accent?

To effectively diagnose a cruise control issue in a 2021 Hyundai Accent, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the cruise control fuse located in the fuse box, as a blown fuse can often be the root cause of the malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are functioning correctly, as faulty buttons can disrupt the system's operation. Utilizing an OBD-II scanner to scan for error codes can provide valuable insights into any underlying issues related to the cruise control system. Additionally, examining the speed sensors is crucial, as these components are responsible for maintaining the set speed; any faults here can lead to cruise control failure. It's also important to check the brake and clutch switches, ensuring they are not stuck or malfunctioning, as these switches disengage the cruise control when the brakes or clutch are engaged. If these preliminary checks do not resolve the issue, testing the cruise control module itself may be necessary, as it is the central control unit for the system. By following this structured diagnostic approach, you can efficiently identify and address the cruise control problem in your Hyundai Accent.

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

When your cruise control stops working in a 2021 Hyundai Accent, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. 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 may prevent the system from engaging at all. Another frequent issue is related to the speed sensor; if it fails to provide accurate speed readings, the cruise control system cannot function properly. Additionally, a blown fuse can disrupt the entire cruise control system, making it essential to check the fuses if you encounter this problem. Throttle-related issues, such as a stuck throttle or problems with the throttle position sensor, can also hinder the cruise control's ability to maintain speed. Lastly, a malfunctioning Electronic Control Module (ECM) can lead to various operational failures, including cruise control issues. By diagnosing these common problems, you can take the necessary steps to restore your cruise control functionality and enhance your driving experience.

How urgent is it to address the malfunctioning cruise control in a 2021 Hyundai Accent?

When it comes to a malfunctioning cruise control in a 2021 Hyundai Accent, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unpredictable vehicle behavior, such as sudden 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-distance travel, as the lack of control can result in dangerous situations. Moreover, neglecting this problem 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 crucial to consult a certified mechanic or visit a Hyundai dealership as soon as you notice any irregularities with your cruise control. Taking prompt action ensures that the issue is diagnosed accurately and resolved efficiently, allowing you to drive with confidence and peace of mind.

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2021 Hyundai Accent Cruise Control Issues & Repair Costs