2018 Toyota Land Cruiser Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2018 Toyota Land Cruiser and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2018 Toyota Land Cruiser 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 2018 Toyota Land Cruiser 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 are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2018 Toyota Land Cruiser?

When troubleshooting the non-functioning cruise control in your 2018 Toyota Land Cruiser, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, inspect the cruise control buttons on the steering wheel to ensure they are responsive and not stuck, as this can prevent engagement. Following this, verify the functionality of the vehicle's speed sensor, since the cruise control relies on accurate speed readings to maintain set speeds. If these initial checks do not reveal the issue, use a diagnostic scanner to look for any error codes that may indicate specific problems within the cruise control system. Additionally, ensure that the brake lights are functioning correctly, as a faulty brake light switch can inhibit cruise control engagement for safety reasons. Lastly, if your vehicle uses a vacuum-based cruise control system, inspect the vacuum lines for any leaks or damage that could affect performance. By methodically working through these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Land Cruiser.

What are the common problems that could cause the cruise control to stop working in a 2018 Toyota Land Cruiser?

When troubleshooting the cruise control system in a 2018 Toyota Land Cruiser, it's essential to understand the common problems that may lead to its failure. One of the primary culprits is a faulty brake pedal switch, which is crucial for disengaging the cruise control when the brake is applied. If this switch malfunctions, it can prevent the system from engaging properly. Additionally, issues with the speed sensor can disrupt the cruise control's ability to maintain the desired speed, as it relies on accurate speed readings. Another potential issue is a blown fuse within the cruise control system, which can halt its operation entirely and is often a straightforward fix. Furthermore, a malfunctioning throttle actuator can prevent the system from maintaining speed, while problems with the Electronic Control Module (ECM) can affect various vehicle functions, including cruise control. Understanding these common issues can help you diagnose and address the problem effectively, but for complex repairs, consulting a qualified mechanic is recommended to ensure the system operates correctly.

How urgent is it to address the malfunctioning cruise control in a 2018 Toyota Land Cruiser?

When dealing with a malfunctioning cruise control in a 2018 Toyota Land Cruiser, it is crucial to recognize the urgency of the situation. Ignoring symptoms such as erratic speed changes can lead to serious safety risks, including unexpected acceleration or deceleration that may result in accidents. Additionally, a malfunctioning cruise control system detracts from the driving comfort that this feature is designed to provide, making long journeys less enjoyable and more stressful. Promptly addressing the issue not only enhances your driving experience but also helps maintain the overall performance and efficiency of your vehicle. Neglecting the problem could lead to more significant complications within the vehicle's systems, potentially resulting in costly repairs. Therefore, it is advisable to consult your vehicle's manual or reach out to a certified Toyota service center to assess the urgency of the malfunction and receive tailored recommendations for resolution. Taking swift action is essential to ensure both your safety and the longevity of your vehicle.

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