2021 Hyundai Santa Fe Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2021 Hyundai Santa Fe 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 Santa Fe 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 Santa Fe 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 steps should I take to diagnose the cruise control issue in my 2021 Hyundai Santa Fe?

When diagnosing the cruise control issue in your 2021 Hyundai Santa Fe, it's essential to adopt a systematic approach that begins with the simplest checks before moving on 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, as faulty buttons can lead to malfunctions. Following this, verify the speed sensor's performance, since it is integral to the cruise control system's operation. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. Additionally, ensure that the brake lights are functioning correctly, as problems with the brake light switch can interfere with cruise control. If your vehicle employs a vacuum-operated system, inspect the vacuum lines for any leaks or damage. If these steps do not resolve the issue, consulting a qualified mechanic or Hyundai dealership is advisable, as they possess the expertise and tools necessary for a thorough diagnosis and repair. By following this structured diagnostic approach, you can effectively identify and address the cruise control problem in your vehicle.

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

When your cruise control stops working in a 2021 Hyundai Santa Fe, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is a faulty brake light switch, which is crucial for the cruise control system as it disengages the cruise when the brake pedal is pressed. If this switch is malfunctioning, it may prevent the cruise control from engaging at all. Another potential issue is related to the speed sensor; if this component is not functioning correctly, the vehicle may struggle to maintain a constant speed, leading to cruise control failure. Additionally, a blown fuse in the cruise control system can completely disable its functionality, so checking the fuses is a good first step. Throttle control malfunctions can also impact the system, as they are essential for maintaining speed. Lastly, any electrical problems, such as faulty wiring or issues with the cruise control module, can disrupt the system's operation. By systematically checking these components, you can identify and potentially resolve the cruise control issues in your Hyundai Santa Fe.

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

When dealing with a malfunctioning cruise control in a 2021 Hyundai Santa Fe, it is crucial to recognize the urgency of the situation, even if it may not seem like an immediate safety concern. While the malfunction may not directly compromise the vehicle's safety, it can lead to significant inconvenience during long drives, affecting your overall driving experience. Ignoring the issue could result in further complications within the vehicle's systems, potentially leading to more extensive and costly repairs down the line. Therefore, it is advisable to address the malfunction promptly, ensuring that the cruise control system operates effectively and maintains the convenience it is designed to provide. Seeking assistance from a certified Hyundai technician or an authorized service center can help diagnose the problem accurately and restore the functionality of this important feature, allowing you to enjoy a smoother and more comfortable driving experience.

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