2015 Hyundai Genesis Coupe Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2015 Hyundai Genesis Coupe 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
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 2015 Hyundai Genesis Coupe 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 Genesis 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.

What are the steps to diagnose the cruise control issue in a 2015 Hyundai Genesis Coupe?

To effectively diagnose a cruise control issue in a 2015 Hyundai Genesis Coupe, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the control module, throttle, and associated sensors, as these are common culprits for cruise control malfunctions. Next, look for any visible signs of wear or damage in the throttle and sensor components, as driver-reported problems often highlight these areas. If initial checks do not reveal the issue, consult online forums dedicated to Hyundai Genesis Coupe owners, where you can find shared experiences and troubleshooting tips that may guide you further. Additionally, if the Smart Cruise Control Malfunction Indicator light is illuminated, it’s crucial to investigate potential electrical issues or damage to the wiring harness. Understanding the vehicle's failsafe mechanism is also essential; ensure that the brakes have been applied since the car was turned on, as this can affect the cruise control's functionality. By following this structured diagnostic approach, you can efficiently identify and address the underlying problems affecting your cruise control system.

What common issues cause cruise control failure in a 2015 Hyundai Genesis Coupe?

When diagnosing cruise control failure in a 2015 Hyundai Genesis Coupe, it's essential to consider several common problems that may be affecting the system. One of the primary culprits is the control module, which can fail and disrupt the entire cruise control functionality. Additionally, issues with sensors or switches, particularly the cruise control switch itself, can lead to either complete failure or partial functionality of the system. Throttle actuation problems are another significant factor; if the throttle is not responding correctly, the cruise control will not engage as intended. Furthermore, past incidents such as a faulty brake switch recall can also play a role, as these components are integral to the cruise control's operation. By understanding these potential issues, DIY enthusiasts can better troubleshoot and address the problems affecting their vehicle's cruise control system.

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

Addressing the non-functioning cruise control in a 2015 Hyundai Genesis Coupe is crucial due to the immediate safety risks it poses. A malfunctioning cruise control system can lead to unpredictable vehicle behavior, particularly on highways where maintaining a steady speed is essential. Ignoring this issue not only compromises your safety but can also affect the vehicle's overall performance, including acceleration and speedometer accuracy. Furthermore, timely intervention allows for effective diagnostic testing, which can pinpoint the underlying cause of the malfunction and prevent further complications. By resolving the cruise control issue promptly, you not only enhance your driving experience but also gain peace of mind, knowing that your vehicle is operating as intended. Therefore, it is vital to prioritize this repair to ensure both your safety and the longevity of your vehicle.

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