2012 INFINITI FX50 Radiator Fan Isn't Working

Fixing the Non-Functioning Radiator Fan in 2012 INFINITI FX50

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
34% chance it's the
Fan Motor or Clutch
0%
28% chance it's the
Fan Relay or Fuse
0%
23% chance it's the
Temp Sensor or Fan Control Module
0%
15% chance it's
Something else
The most common reasons a 2012 INFINITI FX50 radiator fan isn't working are the fan assembly, the fan clutch, or the coolant temperature sensor.
  • Fan Motor or Clutch: A faulty fan motor or a malfunctioning fan clutch can result in inadequate cooling, causing the engine to overheat.
  • Fan Relay or Fuse: A faulty fan relay or blown fuse can prevent the cooling fan from operating, leading to engine overheating.
  • Temp Sensor or Fan Control Module: A faulty temperature sensor or fan control module can result in incorrect readings, causing the engine to overheat or the cooling fan to operate improperly.
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 2012 INFINITI FX50 radiator fan 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.

Over time serpentine belts stretch, crack, and the ribs that ride on the accessory pulleys being to wear smooth. A squealing noise that increases with engine speed or as engine driven accessories are turned on may be noted. The noise is caused by the belt slipping on the pulleys, insufficiently driving them. Ineffective air conditioning, a battery warning light, or intermittent power steering assist can result from this.

»MORE: Symptoms of a bad serpentine belt

The bad thermostat can cause two different sets of problems, depending on whether it's stuck open or stuck closed.

A thermostat that is stuck open can cause the engine to run colder than normal and turn on the check engine light. It may also cause poor fuel mileage and the heater to blow cool air.

A thermostat that is stuck closed will cause the vehicle to overheat. If a new thermostat doesn't resolve engine temperature problems, the cooling system needs to be checked for other issues.

» LEARN MORE: Signs of a bad thermostat, and how to fix it

When the engine coolant temperature sensor fails, it will send inaccurate information to the vehicle’s computer, causing the computer to react to false operating conditions. This will cause the engine to consume more fuel than normal, depleting fuel mileage, and causing black, sooty smoke from the engine under moderate to heavy acceleration. The check engine light will illuminate, and on-board diagnostic trouble codes may be stored for exhaust and emission system failure, fuel delivery system failure, and engine cooling system failure. Overheating may also occur, as the coolant sensor may be leaking fluid out of the engine, creating a an air pocket in the system.

What are the steps to diagnose the non-functioning radiator fan in a 2012 INFINITI FX50?

When diagnosing a non-functioning radiator fan in a 2012 INFINITI FX50, it's crucial to follow a structured diagnostic approach that prioritizes simpler checks before moving on to more complex issues. Begin by inspecting the fuse linked to the radiator fan, as a blown fuse is a common culprit that can easily be replaced. If the fuse is in good condition, proceed to examine the relay responsible for controlling the fan; a faulty relay can disrupt the power supply to the fan. Next, test the radiator fan motor itself to confirm its operational status, since a defective motor will need to be replaced. Additionally, check the wiring connected to the fan for any signs of wear, damage, or loose connections, as these can impede electrical flow. Utilizing a diagnostic scanner to retrieve any error codes can also help identify specific problems within the radiator fan system. Finally, ensure that the coolant temperature sensor is functioning correctly, as a malfunctioning sensor may prevent the fan from activating when required. By systematically addressing these areas, you can effectively diagnose and resolve the issue with your radiator fan.

What are the common causes for the radiator fan not working in a 2012 INFINITI FX50?

When diagnosing why the radiator fan in a 2012 INFINITI FX50 is not functioning, it's essential to consider several common problems that could be at play. A faulty fan motor is often the primary culprit, as it can fail over time and may require replacement to restore proper operation. Additionally, a blown fuse in the fan circuit can disrupt power to the fan, so checking the fuses is a crucial step in troubleshooting. Another potential issue is a malfunctioning temperature sensor, which may fail to signal the fan to activate when the engine reaches a certain temperature. Inspecting the wiring for any damage or loose connections is also vital, as electrical issues can prevent the fan from receiving the necessary power. Lastly, low coolant levels can affect the fan's performance, so ensuring that the coolant is at the recommended level is an important part of the diagnostic process. By systematically addressing these common causes, you can effectively troubleshoot and potentially resolve the radiator fan issue in your vehicle.

How urgent is it to address the non-working radiator fan in a 2012 INFINITI FX50?

When faced with a non-working radiator fan in your 2012 INFINITI FX50, the urgency to address this issue cannot be overstated. A malfunctioning radiator fan can lead to severe overheating, which poses a significant risk to your engine's health. If the engine overheats, it can cause extensive damage to vital components, leading to costly repairs or even complete engine failure. For DIY enthusiasts, it’s essential to recognize that while some repairs can be tackled at home, the radiator fan's role in maintaining optimal engine temperature is critical. Ignoring this problem not only jeopardizes your vehicle's performance but also your safety on the road. Therefore, if you notice any signs of fan failure, such as unusual engine temperatures or warning lights, it is advisable to conduct a thorough inspection or consult a professional mechanic promptly. Taking swift action can save you from more severe issues down the line, ensuring your vehicle remains reliable and efficient.

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2012 INFINITI FX50 Radiator Fan Issues: Causes & Solutions