2020 Genesis G80 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2020 Genesis G80

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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
0%
25% chance it's the
Throttle
0%
20% chance it's
Something else
The most common reasons a 2020 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 2020 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.

What are the steps to diagnose the cruise control issue in a 2020 Genesis G80?

To effectively diagnose a cruise control issue in a 2020 Genesis G80, it's essential to adopt a systematic diagnostic approach that begins with simpler checks before moving on to more complex assessments. Start by inspecting the cruise control fuse, as a blown or damaged fuse can disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are operational and not stuck, as this can prevent engagement. Utilizing an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. Following this, inspect the speed sensors, which are critical for the cruise control system's performance. Additionally, verify that the brake and clutch switches are functioning correctly, since faulty switches can inhibit cruise control activation. If these preliminary checks do not resolve the issue, proceed to test the cruise control module to ensure it is communicating effectively. Lastly, inspect the wiring and connections for any signs of damage or corrosion that could be affecting the system. If the problem persists after these steps, seeking assistance from a professional mechanic with experience in Genesis vehicles is recommended for a thorough diagnosis and repair. This methodical approach not only helps in identifying the issue but also ensures that you address the most common problems first, potentially saving time and effort.

What are the common problems that could cause the cruise control to stop working in a 2020 Genesis G80?

When the cruise control in a 2020 Genesis G80 ceases to function, several common problems may be at play. One of the primary culprits is a faulty speed sensor, which can hinder the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, a malfunctioning brake light switch can disrupt the cruise control operation, as this switch is crucial for disengaging the system when the brakes are applied. Another potential issue is a blown fuse within the cruise control system, which can completely disable its functionality until replaced. Throttle control problems, such as a stuck throttle or issues with the throttle position sensor, can also interfere with the system's ability to maintain speed. Lastly, electrical problems, including wiring issues or a malfunctioning control module, can lead to operational failures. By understanding these common issues, drivers can effectively troubleshoot and restore their cruise control system to working order.

How urgent is it to address the malfunctioning cruise control in a 2020 Genesis G80?

Addressing a malfunctioning cruise control in a 2020 Genesis G80 is of utmost urgency due to the significant safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, creating hazardous driving conditions that could result in accidents. Moreover, cruise control is designed to enhance the driving experience by providing comfort and convenience; when it fails, it detracts from the overall enjoyment of driving. Ignoring these symptoms not only compromises safety but can also lead to further damage within the vehicle's systems, resulting in more expensive repairs down the line. Therefore, it is crucial for owners to prioritize the diagnosis and repair of cruise control issues to ensure both their safety and the longevity of their vehicle.

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