INFINITI FX50 Cruise Control Isn't Working

Common Causes of Cruise Control Malfunctions in Your INFINITI FX50 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 INFINITI FX50 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 INFINITI FX50 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.

Troubleshooting Cruise Control Issues in an INFINITI FX50

When troubleshooting cruise control issues in your INFINITI FX50, begin by checking the control module, as it is often the source of malfunctions. Ensure that all connections are secure and free from corrosion. Next, inspect the cruise control sensor, which plays a crucial role in the system's operation; a faulty sensor can lead to erratic behavior or complete failure. Additionally, examine the throttle system, as any issues here can directly affect cruise control functionality. Pay attention to any warning lights on your dashboard, as they may provide clues about underlying problems. Lastly, consider the wiring and mechanical components, as damaged wires or mechanical failures can disrupt the cruise control system. If these steps do not resolve the issue, it may be time to consult a professional mechanic for a more in-depth diagnosis.

What Could Cause the Cruise Control to Malfunction in an INFINITI FX50?

When dealing with cruise control malfunctions in an INFINITI FX50, it's crucial to understand the common problems that may arise. One of the first areas to check is the fuses, as a blown fuse can disrupt the power supply to the cruise control system, rendering it inoperative. Additionally, the brake pedal position sensor is another frequent culprit; if this sensor is malfunctioning, it can prevent the cruise control from engaging properly. Another potential issue lies within the throttle body, where malfunctions can interfere with the throttle control system, leading to cruise control failure. It's also important to inspect the PRNDL or shifter position switch, as problems here can contribute to the overall malfunction. If you encounter an OBDII code P1568, this may indicate a faulty ICC sensor, which is essential for cruise control functionality. Furthermore, issues with the ICC control unit itself can lead to similar problems, as can wiring issues that disrupt the system's operation. Lastly, don't overlook the possibility of a software glitch, which can sometimes cause unexpected behavior in the cruise control system. By systematically addressing these common problems, you can effectively diagnose and resolve cruise control issues in your INFINITI FX50.

Why is the Cruise Control Not Working in an INFINITI FX50?

When the cruise control in your INFINITI FX50 is not functioning, it is crucial to address the issue promptly, as neglecting it can lead to safety risks and further vehicle complications. A faulty cruise control switch, for instance, can prevent the system from engaging, which may lead to erratic speed control while driving. Additionally, a blown fuse can disrupt the entire cruise control system, leaving you without this essential feature when you need it most. Problems with the speed sensor can also result in inaccurate speed readings, potentially causing you to exceed speed limits unintentionally. Moreover, a malfunctioning brake light switch can disengage the cruise control unexpectedly, posing a significant safety hazard. Lastly, issues with the throttle control system can prevent the cruise control from maintaining a steady speed, which can be particularly dangerous on highways. Therefore, it is advisable to have your vehicle inspected by a qualified mechanic as soon as you notice any cruise control issues to ensure your safety and the proper functioning of your vehicle.

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INFINITI FX50 Cruise Control Issues & Repair Costs