2015 INFINITI Q70 Cruise Control Isn't Working

Fixing Cruise Control Issues in Your 2015 INFINITI Q70

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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 2015 INFINITI Q70 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 2015 INFINITI Q70 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.

What are the initial diagnostic steps to troubleshoot the non-functioning cruise control in a 2015 INFINITI Q70?

When troubleshooting the non-functioning cruise control in a 2015 INFINITI Q70, it's essential to adopt a systematic diagnostic approach. Begin by checking the cruise control fuse located in the vehicle's fuse box, as a blown fuse can often be the simplest explanation for the malfunction. Next, inspect the cruise control buttons on the steering wheel to ensure they are not stuck or damaged, as this can prevent the system from engaging. The vehicle speed sensor is another critical component; verify its functionality since the cruise control system relies on accurate speed readings to operate correctly. Additionally, examine the brake pedal switch, which is designed to disengage the cruise control when the brake is pressed; a faulty switch can inadvertently disable the system. Utilizing a diagnostic scanner to check for error codes can provide further insights into any underlying issues. Finally, inspect the cruise control module for signs of damage or malfunction, as problems here can lead to a complete failure of the system. By following these steps, you can effectively diagnose and address the issues with your cruise control, ensuring a smoother driving experience.

What are the common problems that could cause the cruise control to stop working in a 2015 INFINITI Q70?

When the cruise control in your 2015 INFINITI Q70 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 desired speed, leading to erratic performance. Lastly, problems with the Electronic Control Module (ECM) can also impact the cruise control functionality, as this component oversees various vehicle operations. By identifying these potential issues, you can take the first steps toward diagnosing and repairing your cruise control system, ensuring a smoother driving experience.

How urgent is it to address the malfunctioning cruise control in a 2015 INFINITI Q70?

When it comes to the malfunctioning cruise control in a 2015 INFINITI Q70, understanding the urgency of the situation is crucial for any DIY enthusiast. While this issue may not pose an immediate safety risk like brake or steering failures, it can still lead to significant inconveniences during your driving experience. A malfunctioning cruise control system can prevent you from maintaining a constant speed, which is particularly frustrating on long trips or highway drives where this feature is most beneficial. Ignoring the problem could result in further complications, such as increased wear on your vehicle's engine or transmission due to inconsistent speed management. Therefore, it is advisable to address the malfunction promptly to ensure that your cruise control operates smoothly, enhancing your overall driving comfort and maintaining the vehicle's performance. Taking action sooner rather than later can save you from potential frustrations and ensure that your driving experience remains enjoyable.

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