2016 Lexus GX460 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2016 Lexus GX460 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 2016 Lexus GX460 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 2016 Lexus GX460 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 are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2016 Lexus GX460?

When troubleshooting a non-functioning cruise control in a 2016 Lexus GX460, start with the simplest checks to avoid unnecessary complications. Begin by inspecting the cruise control fuse in the fuse box; a blown fuse can easily disrupt the system. Next, ensure that the cruise control settings are correctly configured according to the vehicle's manual, as incorrect settings can prevent activation. If these initial steps do not resolve the issue, use a diagnostic scanner to check for any error codes that may indicate specific problems within the cruise control system. Additionally, examine the cruise control buttons on the steering wheel for any signs of damage or malfunction, as these controls are crucial for operation. It’s also important to test the brake pedal switch, since the cruise control disengages when the brake is pressed; a faulty switch could be the culprit. Finally, inspect the vehicle speed sensor, which is essential for maintaining speed; any issues here could directly affect cruise control functionality. By following this structured approach, you can effectively diagnose and potentially resolve the cruise control issue in your Lexus GX460.

What are the common problems that could cause the cruise control to stop working in a 2016 Lexus GX460?

When dealing with cruise control issues in a 2016 Lexus GX460, it's essential to understand the common problems that may arise. One frequent culprit is a faulty cruise control switch, which can hinder the system's ability to engage or disengage as intended. Additionally, a blown fuse can disrupt the electrical flow necessary for the cruise control to function, making it a straightforward issue to check and replace. Another critical component is the brake light switch; if this switch malfunctions, it can prevent the cruise control from operating since the system is designed to deactivate when the brakes are applied. Furthermore, problems with the vehicle speed sensor can lead to difficulties in maintaining a set speed, ultimately causing the cruise control to fail. Lastly, a malfunctioning throttle actuator can significantly impact the performance of the cruise control system. By systematically examining these components, DIYers can effectively troubleshoot and resolve cruise control problems in their Lexus GX460.

How urgent is it to address the malfunctioning cruise control in a 2016 Lexus GX460?

Addressing a malfunctioning cruise control in a 2016 Lexus GX460 is of utmost importance due to the potential safety hazards it presents. A faulty system can lead to unexpected acceleration or deceleration, significantly increasing the risk of accidents on the road. Moreover, if the cruise control fails to maintain a consistent speed, it can disrupt driving comfort and efficiency, making long journeys more taxing. Ignoring these symptoms not only compromises safety but can also lead to increased fuel consumption and potential damage to the vehicle's engine or transmission, resulting in costly repairs down the line. Therefore, it is crucial to diagnose and repair any cruise control issues promptly, ensuring both the safety of the driver and passengers and the optimal performance of the vehicle. Taking swift action can prevent further complications and enhance the overall driving experience in your Lexus GX460.

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