2007 Lexus GX470 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2007 Lexus GX470

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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 2007 Lexus GX470 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 2007 Lexus GX470 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 steps to diagnose the cruise control issue in a 2007 Lexus GX470?

When diagnosing a cruise control issue in a 2007 Lexus GX470, it's crucial to follow a structured diagnostic approach that prioritizes simpler checks before moving on to more complex solutions. Begin by inspecting the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, examine the cruise control switch on the steering wheel; a faulty switch is a common cause of cruise control malfunctions. After that, check the speed sensors, which are vital for maintaining the vehicle's set speed; any faults in these sensors can lead to significant issues. Utilizing a diagnostic scanner to retrieve error codes from the vehicle's onboard computer can also provide insights into specific problems affecting the cruise control system. Additionally, inspect the vacuum lines for any leaks or damage, as these can severely impact the system's performance. Finally, test the cruise control module to ensure it is functioning properly. If these steps do not resolve the issue, it may be necessary to consult a professional mechanic who specializes in Lexus vehicles for further diagnosis and repair. This comprehensive approach not only aids in identifying the root cause of the problem but also helps in efficiently addressing the most common issues first, potentially saving you time and effort in the troubleshooting process.

What are the common problems that could cause the cruise control to stop working in a 2007 Lexus GX470?

When troubleshooting the cruise control system in a 2007 Lexus GX470, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty brake light switch, which can prevent the cruise control from engaging since it is designed to deactivate when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the system's ability to maintain a constant speed, leading to erratic behavior or complete failure. Another potential issue is vacuum leaks within the cruise control system, which can significantly impair its operation. Furthermore, a defective cruise control module may also be responsible for the system's malfunction. Lastly, electrical problems, such as blown fuses or damaged wiring, can hinder the performance of the cruise control system. By identifying and addressing these common issues, you can effectively troubleshoot and restore functionality to the cruise control in your Lexus GX470.

How urgent is it to address the malfunctioning cruise control in a 2007 Lexus GX470?

Addressing a malfunctioning cruise control system in a 2007 Lexus GX470 is of utmost importance due to the safety risks it poses. A faulty cruise control can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions and increase the likelihood of accidents. Promptly repairing the system not only mitigates these risks but also helps prevent further damage to the vehicle's components, which could result in more extensive and costly repairs down the line. Additionally, a functioning cruise control enhances the overall driving experience, providing convenience and comfort during long trips. Therefore, it is crucial to prioritize the repair of any cruise control issues to ensure both safety and the optimal performance of your vehicle.

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