2015 Hyundai Elantra GT Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 Hyundai Elantra GT and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2015 Hyundai Elantra GT cruise control isn't working are failed control module, sensor or switch issues, or throttle actuation problems.
  • Sensor: A faulty sensor can lead to incorrect readings, causing issues with engine performance or triggering warning lights on the dashboard.
  • Control Module: A faulty control module can result in 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 acceleration and poor engine 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 2015 Hyundai Elantra GT 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 steps should I take to diagnose the cruise control issue in my 2015 Hyundai Elantra GT?

To effectively diagnose the cruise control issue in your 2015 Hyundai Elantra GT, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the fuse box for any blown fuses that may disrupt the power supply to the cruise control system. If the fuses are intact, proceed to examine the wiring and switches for any signs of damage or loose connections, as these can often lead to functionality problems. Next, take a closer look at the cruise control module itself; any visible signs of damage could indicate a malfunction. Additionally, check the throttle position sensor to ensure it is operating correctly, as a defect here can also affect cruise control performance. Be mindful of any electronic power steering issues, as these can pose safety risks and may need immediate attention. If these steps do not resolve the issue, it may be time to consult a professional mechanic who can provide a more thorough diagnosis and recommend necessary repairs. By following this structured approach, you can efficiently identify and address the cruise control problem, ensuring a safer and more enjoyable driving experience.

What common issues cause cruise control failure in a 2015 Hyundai Elantra GT?

When dealing with cruise control failure in a 2015 Hyundai Elantra GT, it's essential to understand the common problems that may be at play. One of the primary issues could be a malfunctioning control module, which is responsible for managing the cruise control system. Additionally, sensor or switch problems are frequent culprits; if the cruise control switch is faulty, it can lead to a complete system failure. Another critical component to consider is the throttle position sensor; if this sensor is defective, it can disrupt the throttle actuation, ultimately affecting cruise control functionality. Furthermore, wiring issues or a malfunctioning cruise control module can also contribute to the problem. To effectively diagnose and resolve these issues, it is recommended to consult a qualified technician who can accurately identify the root cause and perform the necessary repairs, ensuring your cruise control system operates smoothly once again.

How urgent is it to address the non-functioning cruise control in a 2015 Hyundai Elantra GT?

When dealing with a non-functioning cruise control in a 2015 Hyundai Elantra GT, the urgency of the situation cannot be overstated. Ignoring this issue can lead to significant discomfort during long drives, as the absence of cruise control diminishes the ease of maintaining speed and can result in fatigue. More critically, malfunctioning cruise control can interfere with the vehicle's acceleration and speedometer functionality, potentially leading to erratic driving behavior. This is particularly concerning as it may compromise your control over the vehicle, especially if the electronic power steering becomes unresponsive while cruise control is engaged. Therefore, it is essential to diagnose and rectify the problem immediately to ensure not only your comfort but also your safety and the overall performance of your vehicle. Taking swift action can prevent further complications and ensure a smoother, safer driving experience.

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