Hyundai Elantra Coupe Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Hyundai Elantra Coupe and How to Fix Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
30% chance it's the
Sensor
0%
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 Hyundai Elantra Coupe 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 Hyundai Elantra Coupe 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.

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.

Troubleshooting Cruise Control Issues in a Hyundai Elantra Coupe

When troubleshooting cruise control issues in your Hyundai Elantra Coupe, start by checking the simplest components first. Begin with the cruise control switch on the steering wheel; ensure it is functioning correctly and not stuck or damaged. Next, inspect the brake light switch, as a malfunction here can prevent the cruise control from engaging. If these components are in good condition, examine the wiring for any visible damage or loose connections that could disrupt the system. If the basics check out, consider the throttle position sensor, as a defect here can lead to improper cruise control operation. Finally, if the problem persists, it may be necessary to investigate the cruise control module itself, as this is a more complex component that may require professional diagnostics. By following this methodical approach, you can effectively identify and resolve the issues affecting your cruise control system.

What Could Cause the Cruise Control to Malfunction in a Hyundai Elantra Coupe?

When diagnosing cruise control malfunctions in a Hyundai Elantra Coupe, it's essential to consider several common problems that could be affecting the system. One frequent issue is faulty wiring or switches, which can disrupt the electrical signals necessary for cruise control to function properly. Additionally, a malfunctioning cruise control module may fail to communicate with other vehicle systems, leading to operational issues. Another critical component to examine is the throttle position sensor; if this sensor is defective, it can misreport the throttle's position, causing the cruise control to behave erratically. Sensor failures, including those related to speed or brake, can also contribute to the problem, as they are integral to the system's ability to maintain speed. Lastly, throttle problems, whether mechanical or electronic, can prevent the cruise control from engaging or disengaging as intended. Addressing these issues promptly is vital for maintaining safe driving conditions and ensuring the cruise control system operates effectively.

Why is the Cruise Control Not Working in a Hyundai Elantra Coupe?

When the cruise control in your Hyundai Elantra Coupe is not functioning, it’s crucial to address the issue without delay. Ignoring symptoms such as unresponsive controls or erratic behavior can lead to more significant problems, including potential safety hazards while driving. For instance, a malfunctioning cruise control system may inadvertently cause the vehicle to accelerate unexpectedly, increasing the risk of accidents. Additionally, issues like a faulty throttle position sensor can lead to engine performance problems, such as excessive fuel consumption or black exhaust emissions, which could result in costly repairs if left unchecked. Furthermore, the brake light switch plays a vital role in the cruise control system; if it fails, it can prevent the cruise control from engaging or disengaging properly. Therefore, it is essential to diagnose and resolve these issues promptly to ensure safe driving and maintain the overall health of your vehicle. Taking the time to troubleshoot the cruise control system can save you from more severe consequences down the road.

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