2021 Genesis G70 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2021 Genesis G70 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 2021 Genesis G70 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 2021 Genesis G70 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 steps should I take to diagnose the cruise control issue in my 2021 Genesis G70?

To effectively diagnose the cruise control issue in your 2021 Genesis G70, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, examine the cruise control buttons on the steering wheel for any signs of damage or debris that could hinder their operation. Utilizing an OBD-II scanner is crucial for identifying any error codes that may indicate specific problems within the cruise control system. Following this, check the speed sensors, as they are vital for the system's performance. If these components appear to be functioning correctly, proceed to test the cruise control module to ensure it is communicating properly with the vehicle's computer. Additionally, inspect all related wiring and connections for any damage or corrosion that could affect performance. If these steps do not resolve the issue, it may be necessary to consult a professional mechanic or an authorized Genesis service center for a comprehensive diagnosis and repair. This methodical approach not only helps in identifying the problem but also ensures that you address the simplest issues first, potentially saving time and resources.

What are the common problems that could cause the cruise control to stop working in a 2021 Genesis G70?

When the cruise control in your 2021 Genesis G70 stops functioning, several common issues may be at play. One of the first things to check is the cruise control switch, as a faulty switch can prevent the system from engaging or disengaging properly. Additionally, inspect the fuses related to the cruise control system; a blown fuse can lead to complete failure. Another critical component to consider is the speed sensor, which is essential for maintaining a set speed; any malfunction here can disrupt the system's performance. It's also important to examine the brake light switch, as a malfunction can cause the cruise control to disengage unexpectedly when the brakes are applied. Furthermore, issues with the throttle actuator can hinder the system's ability to maintain speed, while problems with the Electronic Control Module (ECM) can disrupt communication between the cruise control and the engine. By systematically checking these components, you can identify the root cause of the cruise control failure and determine whether a DIY fix is feasible or if professional assistance is needed.

How urgent is it to address the malfunctioning cruise control in a 2021 Genesis G70?

Addressing a malfunctioning cruise control in a 2021 Genesis G70 is of utmost urgency due to the potential safety risks it poses. A faulty system can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions for both the driver and others on the road. Additionally, a malfunctioning cruise control can significantly detract from the driving experience, causing discomfort and frustration during long trips. Ignoring these symptoms not only compromises safety but can also lead to more severe issues within the vehicle's systems, resulting in costly repairs down the line. Therefore, it is crucial for owners to prioritize the diagnosis and repair of cruise control issues to ensure a safe and enjoyable driving experience.

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2021 Genesis G70 Cruise Control Issues & Solutions