2017 Lexus CT200h Cruise Control Isn't Working

Fixing cruise control issues in your 2017 Lexus CT200h for restored functionality

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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 2017 Lexus CT200h 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 CT200h 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 steps should I take to diagnose the cruise control issue in my 2017 Lexus CT200h?

To effectively diagnose the cruise control issue in your 2017 Lexus CT200h, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse in the fuse box, as a blown fuse is a common and easily fixable problem. Next, inspect the cruise control buttons on the steering wheel to ensure they are functioning properly, as any malfunction here can disrupt the system. If these initial checks do not resolve the issue, use an OBD-II scanner to scan for error codes that may indicate specific problems within the cruise control system. Following this, examine the speed sensors, as faulty sensors can prevent the cruise control from maintaining speed. Additionally, check the brake and clutch switches to confirm they are operating correctly, since malfunctioning switches can disable the cruise control. Lastly, inspect the wiring and connections for any signs of damage or corrosion, as these can also lead to system failures. If you still cannot identify the problem after these steps, it may be time to consult a professional mechanic who can provide a more thorough diagnosis and repair. By following this structured approach, you can systematically address potential issues with your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2017 Lexus CT200h?

When dealing with cruise control issues in a 2017 Lexus CT200h, it's essential to understand the common problems that may arise. One frequent culprit is a faulty brake pedal switch, which can disrupt the system's ability to engage or disengage, leaving you without cruise control functionality. Additionally, a malfunctioning speed sensor can prevent the system from maintaining your desired speed, leading to erratic performance. It's also worth checking for a blown fuse, as this can completely disable the cruise control system. Problems with the throttle actuator can further complicate matters, as they affect the system's ability to adjust speed accurately. Lastly, issues with the electronic control module (ECM) can impact various vehicle functions, including cruise control. By systematically examining these components, you can effectively troubleshoot and potentially resolve the cruise control problems in your vehicle, making it a manageable DIY project.

How urgent is it to address the malfunctioning cruise control in my 2017 Lexus CT200h?

Addressing a malfunctioning cruise control system in your 2017 Lexus CT200h is of utmost importance due to the immediate safety risks it poses. A faulty cruise control can lead to erratic vehicle behavior, such as unexpected acceleration or deceleration, which can be particularly hazardous on highways where maintaining a consistent speed is crucial. The potential for loss of control over your vehicle's speed significantly increases the risk of accidents, making it essential to take action as soon as you notice any irregularities. Furthermore, neglecting this issue can adversely affect your vehicle's overall performance and efficiency, leading to a less enjoyable driving experience. Ignoring the problem may also result in more extensive damage to other vehicle components, ultimately leading to higher repair costs. Therefore, it is critical to prioritize the repair of your cruise control system to ensure your safety, maintain optimal vehicle performance, and prevent further complications down the road.

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