2019 INFINITI Q70 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your 2019 INFINITI Q70 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 2019 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 2019 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-functional cruise control in a 2019 INFINITI Q70?

When faced with a non-functional cruise control in your 2019 INFINITI Q70, it's important to approach the troubleshooting process methodically. Start by checking the cruise control fuse, as a blown fuse can easily disrupt the system's operation. Next, verify the functionality of the cruise control switch; a malfunctioning switch may prevent the system from engaging. It's also crucial to inspect the speed sensors, as they are integral to the cruise control's performance. Utilizing a diagnostic scanner to check for error codes can provide valuable insights into any underlying issues. Lastly, ensure that your brake lights are operational, since a faulty brake light switch can interfere with cruise control functionality. By following these steps, you can effectively diagnose and address the problem, potentially restoring your cruise control system without the need for professional assistance.

What are the common problems that could cause the cruise control to stop working in a 2019 INFINITI Q70?

When the cruise control in your 2019 INFINITI Q70 ceases to function, it can be frustrating, but understanding the common problems can help you diagnose the issue. One of the primary culprits is a faulty cruise control switch, which may fail to engage or disengage the system properly. Additionally, issues with the speed sensor can lead to incorrect speed readings, disrupting the cruise control's operation. Another common problem is a malfunctioning brake light switch; since the cruise control is designed to deactivate when the brake pedal is pressed, a faulty switch can prevent it from activating at all. It's also worth checking for blown fuses related to the cruise control system, as these can completely disable its functionality. Lastly, a malfunction in the throttle actuator can hinder the system's ability to maintain the desired speed. By being aware of these potential issues, you can take the first steps toward troubleshooting and possibly resolving the cruise control problems in your vehicle.

How urgent is it to address the malfunctioning cruise control in a 2019 INFINITI Q70?

When it comes to a malfunctioning cruise control system in your 2019 INFINITI Q70, addressing the issue without delay is crucial for both safety and vehicle performance. A malfunction can lead to unpredictable acceleration or deceleration, significantly increasing the risk of accidents on the road. Moreover, if you frequently drive long distances or on highways, a faulty cruise control can detract from your overall driving experience, making it less convenient and more stressful. Additionally, neglecting these symptoms may result in higher fuel consumption due to inconsistent speed management, which can add unnecessary costs to your driving. By taking prompt action to resolve cruise control issues, you not only enhance your safety but also protect your vehicle from potential further damage, ultimately saving on more extensive repairs down the line. Therefore, it is advisable to prioritize the repair of your cruise control system to maintain optimal driving conditions and ensure a smooth, efficient ride.

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2019 INFINITI Q70 Cruise Control Malfunction Guide