2020 Hyundai Elantra GT Radiator Fan Isn't Working

Fixing the Non-Functioning Radiator Fan in 2020 Hyundai Elantra GT

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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 2020 Hyundai Elantra GT 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 2020 Hyundai Elantra GT 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.

When the radiator fans stop functioning properly, the engine temperature will rise. The spike in temperature will be highest when the vehicle is idling at a stop, but should subside once the vehicle begins moving again.

Additionally, the air conditioner typically won't blow as cold. This is because the air from the radiator fans also blows across the air conditioning condenser, so when the fans fail, both systems suffer.

You'll also usually see the check engine light and notice a drop in fuel economy. It's possible the fan will start making noise if it's failing, as well.

What steps should I take to diagnose the non-functioning radiator fan in my 2020 Hyundai Elantra GT?

To effectively diagnose the non-functioning radiator fan in your 2020 Hyundai Elantra GT, begin with the simplest solutions and progressively tackle more complex issues. Start by checking the fuse associated with the radiator fan; a blown fuse is a common and easily fixable problem that can halt fan operation. If the fuse is intact, proceed to inspect the relay, which controls the power supply to the fan. A malfunctioning relay may need replacement to restore functionality. Next, test the fan motor itself to ensure it is receiving power and operating correctly; a failed motor will require replacement. Additionally, examine the temperature sensor, as a faulty sensor can prevent the fan from activating when necessary. Don’t overlook the wiring connected to the fan; damaged or loose connections can disrupt power flow. Finally, verify that your coolant levels are adequate, as low coolant can lead to overheating and may cause the fan to stop working. By following this systematic approach, you can efficiently identify and resolve the issue with your radiator fan.

What are the common causes for the radiator fan not working in a 2020 Hyundai Elantra GT?

When dealing with a non-functioning radiator fan in a 2020 Hyundai Elantra GT, it's essential to understand the common problems that could be at play. One of the primary culprits is a faulty fan motor, which may require replacement to restore the fan's operation. Additionally, a blown fuse in the fan circuit can disrupt power, so checking and replacing any blown fuses is a straightforward first step. Another potential issue is a malfunctioning temperature sensor, which may fail to signal the fan to activate when necessary; replacing this sensor can often resolve the problem. Wiring issues, such as damaged or loose connections, can also prevent the fan from working, making it crucial to inspect the wiring for any visible faults. Lastly, low coolant levels can lead to overheating, which may cause the radiator fan to malfunction. Ensuring that the coolant is at the proper level can help maintain the fan's functionality. By systematically addressing these common causes, DIYers can effectively troubleshoot and potentially fix the radiator fan issue in their Elantra GT.

How urgent is it to repair the non-functioning radiator fan in a 2020 Hyundai Elantra GT?

When it comes to the non-functioning radiator fan in your 2020 Hyundai Elantra GT, addressing the problem without delay is essential for maintaining your vehicle's health. The radiator fan is integral to regulating the engine's temperature; if it fails, the risk of overheating increases significantly. Overheating can lead to severe consequences, including warped cylinder heads and blown head gaskets, which can escalate into costly repairs or even complete engine failure. Moreover, driving with a malfunctioning fan places additional strain on other components of the cooling system, potentially leading to further damage. Therefore, prioritizing the repair of your radiator fan is not just a matter of convenience; it is a critical step in safeguarding your engine's performance and longevity. By taking action promptly, you can avoid the pitfalls of neglect and ensure your vehicle operates smoothly for years to come.

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