2014 INFINITI QX80 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2014 INFINITI QX80 and How to Fix Them

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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 2014 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 steps to diagnose the non-functioning cruise control in a 2014 INFINITI QX80?

When diagnosing the non-functioning cruise control in a 2014 INFINITI QX80, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by inspecting the cruise control fuse located in the fuse box; a blown fuse is a straightforward fix that can often resolve the issue. Next, examine the cruise control buttons on the steering wheel for any signs of damage or obstruction, as these can hinder functionality. Following this, verify the speed sensor's operation, since a malfunctioning sensor can disrupt the cruise control system. It's also crucial to check the brake pedal switch, which should disengage the cruise control when pressed; ensure it is functioning correctly. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Finally, inspect the wiring and connections associated with the cruise control system for any damage or corrosion, ensuring that all connections are secure. By methodically following these steps, you can effectively diagnose and address the cruise control problem in your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2014 INFINITI QX80?

When troubleshooting cruise control issues in a 2014 INFINITI QX80, it's essential to consider several common problems that may be at play. One frequent culprit is a faulty brake pedal switch, which can disrupt the system's ability to engage or disengage properly. Additionally, problems with the speed sensor can prevent the vehicle from maintaining a consistent speed, leading to cruise control failure. A blown fuse in the cruise control circuit is another straightforward issue that can halt functionality altogether. Furthermore, the throttle actuator, responsible for adjusting engine throttle in response to cruise control settings, may malfunction, causing operational problems. Lastly, if the electronic control module (ECM) experiences a failure, it can significantly impact the cruise control system. By understanding these potential issues, DIYers can better diagnose and address the root cause of their cruise control problems, ensuring a smoother driving experience.

How urgent is it to address the non-functioning cruise control in a 2014 INFINITI QX80?

Addressing the non-functioning cruise control in your 2014 INFINITI QX80 should be a priority, as neglecting this issue can lead to more significant problems down the line. While it may not seem like an immediate emergency, a malfunctioning cruise control system can indicate underlying issues that may affect other critical vehicle functions, potentially compromising your safety on the road. For instance, if the cruise control system is malfunctioning, it could be a sign of electrical problems or sensor failures that might also impact your vehicle's braking or acceleration systems. Furthermore, without the convenience of cruise control, long drives can become more tiring and less fuel-efficient, leading to an overall diminished driving experience. By addressing the problem promptly, you not only enhance your comfort and safety but also prevent further damage that could result in costly repairs. Therefore, taking the time to diagnose and fix the cruise control issue is a wise decision for any DIY enthusiast looking to maintain their vehicle's performance and reliability.

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