Genesis G80 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your Genesis G80 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 Genesis G80 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 Genesis G80 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 Genesis G80

When troubleshooting cruise control issues in your Genesis G80, begin by examining the control module, as it is often the heart of the system. Check for any visible signs of damage or loose connections, as these can lead to malfunctions. Next, inspect the cruise control sensor, which plays a crucial role in detecting vehicle speed and ensuring proper functionality. If the sensor appears to be functioning correctly, turn your attention to the throttle, as any irregularities here can directly impact cruise control performance. Additionally, consider user experiences regarding sensitivity; if you find that your cruise control reacts too quickly to changes in traffic, it may be worth recalibrating or adjusting the settings. Lastly, if you frequently drive on winding highways, be aware that the system may struggle with sudden deceleration due to nearby slow-moving vehicles. By following this diagnostic approach, you can systematically identify and address the root causes of cruise control issues in your Genesis G80, ensuring a smoother driving experience.

What Could Cause the Cruise Control to Malfunction in a Genesis G80?

When dealing with cruise control malfunctions in a Genesis G80, it's essential to understand the common problems that may arise. One frequent issue is a failed control module, which can disrupt the communication between the cruise control system and the vehicle's computer. Additionally, sensor or switch failures, particularly with the cruise control switch itself, can lead to either a complete failure of the system or a partial loss of functionality. Throttle actuation problems, often stemming from a faulty throttle position sensor, can cause the engine's computer to overcompensate, resulting in symptoms like excessive black exhaust. Furthermore, a blown fuse or a defective brake pedal switch can also impede cruise control operation. In some instances, complications within the throttle control system or the anti-lock braking system (ABS) may contribute to these malfunctions. For those looking to troubleshoot these issues themselves, a thorough inspection of these components can help identify the root cause of the problem, although consulting a qualified mechanic is advisable for a definitive diagnosis and repair.

Why is the Cruise Control Not Working in a Genesis G80?

When the cruise control in your Genesis G80 is not functioning, it’s crucial to address the issue promptly, as neglecting it can lead to safety risks and potentially more significant vehicle damage. Common causes for cruise control malfunctions include failures in the control module, sensors, or switches, which can disrupt the system's operation. Additionally, throttle actuation problems, particularly those stemming from a faulty throttle position sensor, can cause the engine to behave erratically, leading to excessive fuel consumption and black exhaust emissions. These symptoms not only indicate a malfunctioning cruise control system but also suggest underlying issues that could compromise your vehicle's performance and safety. Therefore, if you notice any signs of cruise control failure, it’s advisable to conduct a thorough diagnosis and seek repairs to ensure your Genesis G80 remains safe and reliable on the road.

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Genesis G80 Cruise Control Issues: Common Problems & Repairs