2023 Lexus LS500h Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2023 Lexus LS500h

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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 2023 Lexus LS500h 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 2023 Lexus LS500h 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.

What are the initial diagnostic steps to take when the cruise control isn't working on a 2023 Lexus LS500h?

When faced with a malfunctioning cruise control system in your 2023 Lexus LS500h, it's crucial to approach the diagnosis methodically. Start by checking the cruise control settings to ensure that the system is activated and set to your desired speed. If everything appears correct, the next step is to inspect the cruise control fuse; a blown fuse can easily disrupt functionality. Following this, examine the speed sensors for cleanliness and integrity, as any debris or damage can hinder performance. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into specific issues affecting the system. Additionally, ensure that your brake lights are functioning properly, as faulty lights can interfere with cruise control operation. Finally, inspect the wiring and connections associated with the cruise control system for any signs of damage or loose connections, as securing these can often resolve the issue. By systematically addressing these areas, you can effectively troubleshoot and potentially restore your cruise control functionality.

What are the common problems that could cause the cruise control to stop working in a 2023 Lexus LS500h?

When the cruise control in your 2023 Lexus LS500h stops functioning, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is a faulty speed sensor, which is essential for the cruise control system to accurately gauge your vehicle's speed. If this sensor malfunctions, the system may fail to engage or maintain the desired speed. Another common issue is related to the brake light switch; if this switch is defective, it can inadvertently signal the cruise control to disengage whenever the brake pedal is pressed. Additionally, problems with the throttle control system, such as a malfunctioning throttle position sensor or actuator, can hinder the cruise control's ability to maintain a steady speed. Electrical issues, including blown fuses or wiring problems, can also disrupt the cruise control's operation, as can vacuum leaks within the system that affect its pressure and functionality. By identifying these potential issues, you can take the first steps toward troubleshooting and restoring your cruise control system.

How urgent is it to address the malfunctioning cruise control in a 2023 Lexus LS500h?

Addressing a malfunctioning cruise control in a 2023 Lexus LS500h is of utmost importance due to the immediate safety risks it poses. A malfunction can lead to unexpected acceleration or deceleration, which can create hazardous driving conditions for both the driver and others on the road. Additionally, cruise control is a feature that enhances the driving experience, particularly during long trips, and any issues can detract from comfort and convenience. Ignoring these symptoms not only compromises safety but can also lead to more significant problems within the vehicle's systems, resulting in costly repairs down the line. Therefore, it is crucial to prioritize the diagnosis and repair of cruise control malfunctions to maintain both safety and vehicle performance.

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2023 Lexus LS500h Cruise Control Issues & Repair Costs