2025 Lexus NX350 Cruise Control Isn't Working

Fixing Cruise Control Issues in the 2025 Lexus NX350

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Reviewed by
Bo Fader
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 2025 Lexus NX350 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.

What steps should I take to diagnose the non-functioning cruise control in my 2025 Lexus NX350?

To effectively diagnose the non-functioning cruise control in your 2025 Lexus NX350, 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 rectifiable issue. Next, examine the cruise control buttons on your steering wheel for any signs of damage or sticking, as these can hinder the system's engagement. Following this, verify the functionality of the speed sensor, which is essential for cruise control operation; a malfunctioning sensor can disrupt the system's performance. Additionally, check the brake pedal switch, as it is designed to disengage cruise control when the brakes are applied; a faulty switch can lead to persistent issues. If these initial checks do not resolve the problem, utilize an OBD-II scanner to identify any error codes that may provide further insight into the underlying issue. Should the problem remain unresolved after these steps, it is advisable to consult a professional mechanic or an authorized Lexus service center for a comprehensive diagnosis and repair. By following this structured diagnostic approach, you can efficiently identify and address the issues affecting your cruise control system.

What are the common problems that could cause the cruise control to stop working in a 2025 Lexus NX350?

When the cruise control in your 2025 Lexus NX350 stops functioning, it can be frustrating, but understanding the common issues can help you diagnose the problem. 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 brakes are applied, disrupting its operation. Additionally, problems with the throttle control system, such as a malfunctioning throttle position sensor, can hinder the cruise control's ability to maintain speed. Electrical issues, including blown fuses or wiring problems, can also prevent the cruise control from working properly. Lastly, vacuum leaks within the cruise control system can lead to a loss of pressure, further complicating its functionality. By identifying these potential issues, you can take the first steps toward troubleshooting and possibly repairing your cruise control system.

How urgent is it to address the malfunctioning cruise control in my 2025 Lexus NX350?

When it comes to the malfunctioning cruise control in your 2025 Lexus NX350, the urgency to address the issue cannot be overstated. A malfunctioning system can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. This unpredictability not only puts you at risk but also endangers other drivers and pedestrians. Promptly addressing the issue is essential to prevent potential accidents or collisions that could arise from the cruise control failing to operate correctly. Moreover, neglecting this problem may lead to further complications within your vehicle's systems, resulting in more extensive and costly repairs down the line. Therefore, it is highly advisable to consult with a certified mechanic or reach out to your dealership as soon as you notice any symptoms of malfunction. Taking swift action ensures not only your safety but also the optimal functioning of your vehicle, making it imperative to prioritize this repair.

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