2014 INFINITI Q50 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2014 INFINITI Q50 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 2014 INFINITI Q50 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 2014 INFINITI Q50 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.

What are the initial diagnostic steps to take when the cruise control isn't working on a 2014 INFINITI Q50?

When faced with a malfunctioning cruise control system in your 2014 INFINITI Q50, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the fuse box; a blown fuse is a common and easily fixable issue that can disrupt the system's functionality. Next, inspect the cruise control buttons on the steering wheel to ensure they are operational, as faulty buttons can prevent engagement. It's also crucial to verify the speed sensor's performance, as this component is vital for the cruise control to function correctly. Utilizing a diagnostic scanner can help you identify any error codes related to the cruise control system, providing insight into more complex issues. Lastly, check the brake lights, as a malfunctioning brake light switch can inadvertently disable the cruise control for safety reasons. By following these steps, you can effectively troubleshoot and potentially resolve the cruise control issue on your vehicle.

What are the common problems that could cause the cruise control to stop working in a 2014 INFINITI Q50?

When the cruise control in your 2014 INFINITI Q50 ceases to function, it can be frustrating, but understanding the common problems can help you troubleshoot effectively. One of the primary culprits is a faulty brake pedal switch, which can disrupt the system's ability to engage or disengage properly. Additionally, issues with the speed sensor can lead to incorrect speed readings, causing the cruise control to malfunction. A blown fuse in the cruise control circuit is another frequent issue that can prevent the system from operating as intended. Furthermore, if the throttle actuator is malfunctioning, it may struggle to maintain the set speed, leading to erratic behavior. Lastly, problems with the Electronic Control Module (ECM) can interfere with communication between the cruise control system and the engine, resulting in a complete failure of the cruise control function. By identifying these potential issues, you can take the first steps toward diagnosing and possibly fixing the problem yourself, or at least be better prepared when consulting a professional mechanic.

How urgent is it to address the malfunctioning cruise control in a 2014 INFINITI Q50?

When it comes to a malfunctioning cruise control in a 2014 INFINITI Q50, the urgency of addressing the issue cannot be overstated. A faulty cruise control system can lead to unexpected acceleration or deceleration, creating a significant safety hazard on the road. Moreover, such malfunctions may signal deeper issues within the vehicle's electronic systems or sensors, which could compromise overall performance and reliability. Ignoring these symptoms not only risks your safety but can also result in decreased fuel efficiency and potential damage to other critical components of the vehicle. By promptly diagnosing and repairing the cruise control system, you can prevent further complications and potentially save on costly repairs down the line. Therefore, if you notice any irregularities with your cruise control, it is crucial to take action quickly, whether that means consulting a professional mechanic or attempting a DIY fix, to ensure the safe and efficient operation of your vehicle.

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2014 INFINITI Q50 Cruise Control Not Working: Causes & Fixes