2006 Lexus RX330 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2006 Lexus RX330 and How to Fix Them

Find Repair Location
Reviewed by
Bo Fader
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 2006 Lexus RX330 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 2006 Lexus RX330 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-functional cruise control in a 2006 Lexus RX330?

When troubleshooting the non-functional cruise control in your 2006 Lexus RX330, start with the simplest checks to potentially resolve the issue quickly. Begin by inspecting the cruise control fuse; a blown fuse is a common culprit that can easily be replaced. Next, examine the cruise control switch located on the steering wheel, as a malfunction here can disrupt the system's operation. It's also essential to verify that your brake lights are functioning correctly, since a faulty brake light switch can prevent the cruise control from engaging. Additionally, check the vehicle speed sensor, as any faults in this component can directly affect the cruise control's performance. Finally, consider scanning the vehicle's onboard computer for error codes that may provide insights into the problem. By following this structured approach, you can effectively diagnose and potentially resolve the cruise control issue in your Lexus RX330.

What are the common problems that could cause the cruise control to stop working in a 2006 Lexus RX330?

When troubleshooting the cruise control system in a 2006 Lexus RX330, it's essential to understand the common problems that may lead to its malfunction. One frequent issue is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to disengage when the brake pedal is pressed. Additionally, a defective speed sensor can disrupt the system's ability to maintain a constant speed, rendering the cruise control ineffective. Another potential culprit is a blown fuse within the cruise control system, which can halt its operation entirely. Furthermore, vacuum leaks in the engine can compromise the necessary vacuum pressure for the cruise control to function properly. Lastly, a malfunctioning cruise control module may also be responsible for the system's failure. Identifying these issues can help you effectively diagnose and address the problem, but for a thorough inspection and repair, consulting a professional mechanic is often recommended.

How urgent is it to address the non-functioning cruise control in a 2006 Lexus RX330?

Addressing a non-functioning cruise control in a 2006 Lexus RX330 should be considered a priority for any DIY vehicle owner. While it may not seem like an immediate emergency, the implications of ignoring this issue can lead to more significant problems down the line. A malfunctioning cruise control system can indicate deeper issues within the vehicle's electronic or engine control systems, which, if left unchecked, could escalate into costly repairs. Moreover, the convenience of cruise control is particularly valuable during long drives, as it helps maintain a steady speed, reduces driver fatigue, and enhances fuel efficiency. By taking the time to diagnose and repair the cruise control system, you not only restore a vital feature of your vehicle but also ensure your safety on the road. Therefore, it is advisable to investigate the cause of the malfunction sooner rather than later, as timely intervention can prevent further complications and ensure the continued reliability of your Lexus RX330.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2006 Lexus RX330 Cruise Control Not Working | RepairPal