2022 Lexus RC350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2022 Lexus RC350 and How to Fix Them

Find Repair Location
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 2022 Lexus RC350 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 2022 Lexus RC350 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 steps should I take to diagnose the cruise control issue in my 2022 Lexus RC350?

To effectively diagnose the cruise control issue in your 2022 Lexus RC350, start with the simplest solutions before moving on to more complex diagnostics. Begin by checking the cruise control fuse, as a blown fuse can easily disrupt functionality. Next, inspect the cruise control buttons on your steering wheel to ensure they are operational, since faulty buttons can lead to malfunctions. If these initial checks do not resolve the issue, use an OBD-II scanner to identify any error codes that may indicate specific problems within the cruise control system. Following this, examine the speed sensors, as they play a crucial role in maintaining your set speed; any faults here can hinder performance. Additionally, inspect the wiring connections associated with the cruise control system for any signs of damage or loose connections, as these can also cause issues. If you have gone through these steps and still face difficulties, it may be time to consult a professional mechanic or an authorized Lexus service center for a comprehensive diagnosis and repair. By systematically addressing these areas, you can effectively troubleshoot and potentially resolve the cruise control issue in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2022 Lexus RC350?

When troubleshooting cruise control issues in a 2022 Lexus RC350, it's essential to understand the common problems that may lead to its malfunction. One of the primary culprits is a faulty speed sensor, which can hinder the system's ability to accurately gauge the vehicle's speed, preventing it from engaging or maintaining the desired speed. Additionally, a malfunctioning brake light switch can disrupt the cruise control operation, as this switch is designed to deactivate the system when the brakes are applied. Another potential issue is a blown fuse within the cruise control circuit, which can completely disable the system. Problems with the throttle control system, including a defective throttle position sensor or throttle actuator, can also affect the cruise control's performance. Lastly, any electrical issues, such as wiring faults or a malfunctioning control module, can lead to cruise control failure. By identifying and addressing these common problems, you can effectively troubleshoot and potentially resolve the cruise control issues in your Lexus RC350.

How urgent is it to address the malfunctioning cruise control in my 2022 Lexus RC350?

Addressing a malfunctioning cruise control in your 2022 Lexus RC350 is crucial for several reasons. First and foremost, a faulty system can lead to unexpected acceleration or deceleration, significantly increasing the risk of accidents on the road. This safety concern should not be taken lightly, as it can endanger not only your life but also the lives of other drivers and pedestrians. Additionally, a malfunctioning cruise control can make long drives uncomfortable and stressful, detracting from the overall driving experience. Beyond safety and comfort, ignoring this issue can lead to increased fuel consumption due to inconsistent speed control, which can add unnecessary costs to your fuel expenses. Furthermore, delaying repairs may result in more extensive damage to the vehicle's systems, ultimately leading to higher repair bills. Therefore, it is imperative to consult a qualified mechanic or authorized service center at the first sign of trouble to ensure your vehicle remains safe, efficient, and enjoyable to drive.

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.

2022 Lexus RC350 Cruise Control Issues & Solutions