2021 Hyundai Tucson Cruise Control Isn't Working

Troubleshooting Common Issues with Cruise Control in Your 2021 Hyundai Tucson and How to Fix Them

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Reviewed by
Andrew Hajjar
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 Hyundai Tucson 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 Tucson 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 steps to diagnose the cruise control issue in a 2021 Hyundai Tucson?

To effectively diagnose a cruise control issue in a 2021 Hyundai Tucson, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse, as a blown 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 or damaged. Utilizing an OBD-II scanner can provide insights into any error codes that may indicate specific problems within the cruise control system. Following this, check the speed sensors, as they are essential for the cruise control's performance. It's also crucial to verify that the brake and clutch switches are functioning properly, since these components are designed to disengage the cruise control when necessary. If these initial checks do not reveal the issue, proceed to test the cruise control module to ensure it is communicating effectively. Finally, inspect the wiring and connections for any signs of damage or corrosion that could be affecting the system. By following this structured diagnostic approach, you can efficiently identify and address the root cause of the cruise control problem in your Hyundai Tucson.

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

When dealing with cruise control issues in a 2021 Hyundai Tucson, it's essential to understand the common problems that may arise. 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 can prevent the system from engaging properly. Additionally, speed sensor issues can disrupt the cruise control's functionality, as the system relies on accurate speed readings to maintain the desired speed. Another potential problem is a blown fuse within the cruise control system, which can halt its operation entirely and may require a simple fuse replacement to restore functionality. Furthermore, a malfunctioning throttle actuator can affect the engine's speed control, impacting the cruise control's ability to maintain a set speed. Lastly, problems with the Electronic Control Module (ECM), which oversees various vehicle functions including cruise control, can also lead to system failures. If you experience any of these issues, it is advisable to consult a qualified mechanic for a thorough inspection and diagnosis.

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

When it comes to a malfunctioning cruise control in a 2021 Hyundai Tucson, 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 unpredictability not only endangers the driver and passengers but also poses a threat to other road users. Moreover, delaying repairs can exacerbate the problem, potentially leading to more extensive damage to the vehicle's electronic systems, which could result in costly repairs down the line. Therefore, it is crucial to prioritize the diagnosis and repair of any cruise control issues to ensure safe driving conditions and to avoid further complications that could arise from neglecting the problem. Taking prompt action not only safeguards your safety but also protects your investment in the vehicle.

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