2010 Lexus RX350 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2010 Lexus RX350 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 2010 Lexus RX350 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 2010 Lexus RX350 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 2010 Lexus RX350?

When faced with a non-functioning cruise control in your 2010 Lexus RX350, it's crucial to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box, as a blown fuse is a common and easily fixable issue. Next, inspect the cruise control buttons on the steering wheel for any signs of damage or sticking, as these can hinder the system's operation. Following this, verify the functionality of the speed sensor, since a malfunction here can disrupt the entire cruise control system. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying problems. Additionally, ensure that the brake and clutch switches are operating correctly, as faulty switches can prevent the cruise control from engaging. Lastly, if your vehicle employs a vacuum-operated system, inspect the vacuum lines for leaks or damage, as these can significantly impact performance. By methodically working through these steps, you can effectively diagnose and potentially resolve the cruise control issue in your Lexus RX350.

What are the common problems that could cause the cruise control to stop working in a 2010 Lexus RX350?

When troubleshooting cruise control issues in a 2010 Lexus RX350, it's essential to understand the common problems that may be at play. One frequent culprit is a faulty brake light switch, which can prevent the cruise control from engaging since the system is designed to disengage when the brake pedal is pressed. Additionally, issues with the speed sensor can disrupt the vehicle's ability to maintain a constant speed, leading to cruise control failure. A blown fuse in the cruise control system can also be a straightforward fix, as it may cut off power to the system entirely. Furthermore, if the throttle actuator is malfunctioning, it can hinder the engine's speed control, impacting cruise control functionality. Lastly, a defective cruise control module can prevent the system from operating correctly. By systematically checking these components, you can effectively diagnose and potentially resolve the cruise control problems in your Lexus RX350.

How urgent is it to address the malfunctioning cruise control in a 2010 Lexus RX350?

When it comes to a malfunctioning cruise control system in a 2010 Lexus RX350, the urgency to address the issue cannot be overstated. A faulty cruise control can lead to unpredictable vehicle behavior, such as sudden acceleration or deceleration, which significantly increases the risk of accidents on the road. Ignoring these symptoms not only jeopardizes your safety but also that of other drivers and pedestrians. Moreover, delaying repairs can exacerbate the problem, potentially leading to more extensive damage to the vehicle's electronic systems, which could result in costly repairs down the line. Therefore, it is crucial to take immediate action by either troubleshooting the issue yourself or seeking assistance from a qualified mechanic. By prioritizing the repair of your cruise control system, you ensure a safer driving experience and protect your investment in the vehicle.

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2010 Lexus RX350 Cruise Control Issues & Repairs | RepairPal