2017 INFINITI QX80 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2017 INFINITI QX80 and How to Fix Them

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Reviewed by
Andrew Hajjar
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 INFINITI QX80 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 are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2017 INFINITI QX80?

When troubleshooting the non-functioning cruise control in a 2017 INFINITI QX80, it's essential to adopt a systematic diagnostic approach that begins with the simplest checks before moving on to more complex issues. Start by inspecting the cruise control fuse located in the vehicle's fuse box, as a blown fuse can easily disrupt the system's functionality. Next, examine the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent activation. It's also crucial to review the vehicle speed sensor, which is integral to cruise control operation; if this sensor is malfunctioning, it can lead to issues with maintaining speed. Additionally, check the brake pedal switch, since a faulty switch can inadvertently disengage the cruise control when the brake is applied. Utilizing a diagnostic scanner to check for error codes can provide further insights into any underlying problems. Lastly, inspect the cruise control module for signs of damage or corrosion and verify that the vehicle speedometer is functioning correctly, as discrepancies in speed readings can affect cruise control performance. By following this structured approach, you can effectively 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 2017 INFINITI QX80?

When dealing with cruise control issues in a 2017 INFINITI QX80, 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 it is designed to deactivate when the brake pedal is pressed. Additionally, speed sensor malfunctions can disrupt the system's ability to maintain a constant speed, leading to cruise control failure. A blown fuse in the cruise control circuit can also halt its operation entirely. Furthermore, issues with the throttle actuator, responsible for regulating engine speed, can impede cruise control functionality. Lastly, problems with the Electronic Control Module (ECM), which oversees various vehicle functions including cruise control, can significantly affect its performance. If you encounter cruise control problems, it's advisable to conduct a thorough inspection of these components or consult a professional mechanic for an accurate diagnosis and repair.

How urgent is it to address the non-functioning cruise control in a 2017 INFINITI QX80?

When it comes to a non-functioning cruise control in your 2017 INFINITI QX80, understanding the urgency of the situation is crucial for both safety and vehicle performance. While it may not seem like an immediate emergency, neglecting this issue can lead to more significant problems down the line. A malfunctioning cruise control system can be indicative of underlying issues within the vehicle's electronic or mechanical systems, which, if left unaddressed, could compromise your driving experience and safety. For DIY enthusiasts, it’s essential to recognize that the cruise control system is interconnected with various components, and a failure could signal a need for further inspection. Addressing the problem promptly not only helps maintain the convenience and efficiency that cruise control offers but also prevents potential safety hazards that could arise from a malfunctioning system. Therefore, taking the time to diagnose and repair the cruise control issue is a wise decision that ensures the continued safe operation of your vehicle.

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2017 INFINITI QX80 Cruise Control Not Working | RepairPal