2017 Lexus IS200t Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 Lexus IS200t and How to Fix Them

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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 2017 Lexus IS200t 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 2017 Lexus IS200t 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 non-functioning cruise control in a 2017 Lexus IS200t?

To effectively diagnose the non-functioning cruise control in your 2017 Lexus IS200t, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by inspecting the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, examine the cruise control buttons on the steering wheel to ensure they are operational, as malfunctioning buttons can hinder functionality. Following this, verify the speed sensor's performance, since a faulty sensor can disrupt the cruise control system. It's also essential to check the brake pedal switch, as a defective switch can prevent the cruise control from engaging altogether. If these initial checks do not reveal the problem, utilize a diagnostic scanner to identify any error codes that may indicate specific issues within the cruise control system. Lastly, inspect the wiring and connections associated with the cruise control for any signs of damage or corrosion, as compromised wiring can lead to operational failures. By following this structured diagnostic approach, you can efficiently identify and address the root cause of your cruise control issues.

What are the common problems that could cause the cruise control to stop working in a 2017 Lexus IS200t?

When dealing with cruise control issues in a 2017 Lexus IS200t, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty cruise control switch, which can hinder the system's ability to engage or disengage as intended. Additionally, a malfunctioning speed sensor can disrupt the system's capacity to maintain a consistent speed, leading to erratic performance. Another potential issue is the brake light switch; if this component is defective, it may cause the cruise control to disengage unexpectedly when the brakes are applied. Problems with the throttle actuator can also arise, affecting the system's ability to adjust speed accurately. Lastly, electrical faults, including blown fuses or wiring issues, can prevent the cruise control module from functioning correctly. By identifying and addressing these common problems, DIYers can effectively troubleshoot and potentially restore the cruise control functionality in their Lexus IS200t.

How urgent is it to address the non-functioning cruise control in a 2017 Lexus IS200t?

When it comes to a non-functioning cruise control in a 2017 Lexus IS200t, the urgency of addressing the issue cannot be overstated. Cruise control is not just a luxury; it plays a crucial role in enhancing driving comfort and safety, particularly during long journeys. If this feature is malfunctioning, it may signal deeper electronic or sensor-related problems that could compromise the vehicle's overall performance. Ignoring these symptoms can lead to escalating issues, potentially resulting in more extensive and costly repairs down the line. Moreover, a malfunctioning cruise control system can detract from the driving experience, making highway travel less enjoyable and more taxing. Therefore, for those considering a DIY approach, it is essential to act swiftly. Begin by checking the vehicle's fuses and connections, as these are common culprits for cruise control failures. If the problem persists, consulting a qualified mechanic or dealership for a thorough diagnosis is advisable to ensure both safety and functionality are restored.

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