2014 Lexus GX460 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2014 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 2014 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 2014 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 2014 Lexus GX460?

When troubleshooting the non-functioning cruise control in a 2014 Lexus GX460, it's essential to adopt a systematic diagnostic approach. Start by checking the cruise control fuse in the fuse box, as a blown fuse can often be the simplest explanation for the malfunction. Next, ensure that the cruise control settings are correctly configured according to the vehicle's manual, as incorrect settings can prevent the system from engaging. If these initial checks do not resolve the issue, use a diagnostic scanner to look for any error codes that may indicate deeper problems within the cruise control system. Additionally, inspect the cruise control switch on the steering wheel for any signs of damage or malfunction, as a faulty switch can hinder operation. Finally, verify that the brake pedal switch is functioning correctly, since cruise control systems are designed to disengage when the brake is applied. By following these steps, you can effectively narrow down the potential causes of the cruise control issue and take appropriate action to restore functionality.

What are the common problems that could cause the cruise control to stop working in a 2014 Lexus GX460?

When troubleshooting cruise control issues in a 2014 Lexus GX460, it's essential to consider several common problems that could be at play. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since this switch is designed to disengage the system when the brakes are applied. Additionally, a malfunctioning speed sensor can disrupt the cruise control's ability to maintain a steady speed, leading to unexpected disengagement. It's also wise to check for a blown fuse in the vehicle's electrical system, as this can directly affect the cruise control's operation. Furthermore, issues with the throttle control system, such as a defective throttle position sensor or throttle actuator, can hinder the cruise control's functionality, given their critical role in speed maintenance. Lastly, problems with the Electronic Control Module (ECM) can also result in cruise control failure, as this component manages various vehicle functions, including the cruise control system. By systematically addressing these potential issues, drivers can effectively troubleshoot and restore the functionality of their cruise control system.

How urgent is it to address the non-functioning cruise control in a 2014 Lexus GX460?

Addressing the non-functioning cruise control in a 2014 Lexus GX460 is of utmost urgency due to the significant safety risks it poses. A malfunctioning cruise control system can lead to erratic speed changes, increasing the likelihood of accidents, especially during long drives or highway travel where maintaining a steady speed is crucial. Beyond safety, the absence of functional cruise control detracts from the overall driving experience, making long trips more tiring and less enjoyable. Additionally, neglecting this issue can adversely affect the vehicle's resale value; prospective buyers often look for well-maintained vehicles with all systems functioning properly. Therefore, it is essential to diagnose and repair the cruise control system promptly to ensure safety, enhance driving comfort, and protect the investment in your vehicle.

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2014 Lexus GX460 Cruise Control Issues & Repair Costs