2016 Kia Sorento Radiator Fan Isn't Working

Diagnosing the Causes of a Non-Functional Radiator Fan in Your 2016 Kia Sorento and How to Fix It

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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 2016 Kia Sorento 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 2016 Kia Sorento 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 are the steps to diagnose the non-functioning radiator fan in a 2016 Kia Sorento?

To effectively diagnose a non-functioning radiator fan in a 2016 Kia Sorento, start with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Begin by disconnecting the battery to ensure safety while working on electrical components. Next, inspect the cooling fan relay located in the fuse box; testing it with a multimeter or swapping it with a similar relay can quickly determine if it’s the source of the problem. Following this, check the relevant fuses for any that may be blown, as replacing a faulty fuse can sometimes resolve the issue. If these initial steps do not yield results, proceed to test the radiator fan motor directly using a 12-volt battery to see if it operates independently. This will help identify if the motor itself is faulty. Additionally, examine the wiring and connections for any signs of damage or corrosion, and ensure that the temperature sensor is functioning correctly, as it plays a crucial role in activating the fan. By following this structured diagnostic approach, you can efficiently identify the root cause of the radiator fan malfunction and take appropriate action to restore its functionality.

What are the common causes for the radiator fan not working in a 2016 Kia Sorento?

When troubleshooting a malfunctioning radiator fan in a 2016 Kia Sorento, it's essential to consider several common problems that could be at play. One of the first things to check is the fuse associated with the cooling fan, as a blown fuse can disrupt the electrical flow necessary for operation. If the fuse appears intact, the next step is to examine the cooling fan relay, which may have failed. Testing the relay with a multimeter or swapping it with a similar one can help determine if it’s the source of the issue. Additionally, inspect the wiring for any faults, as damaged or frayed wires can prevent the fan from receiving the required signals. Another critical component to evaluate is the thermal switch or temperature sensor, which regulates the fan's operation based on engine temperature; a malfunction here can lead to improper fan activation. Lastly, consider the possibility of broader electrical issues, such as short circuits or faulty connections, which can also impede the fan's functionality. By systematically checking these areas, you can effectively diagnose and address the problem, ensuring your radiator fan operates as intended.

How urgent is it to repair the non-functioning radiator fan in a 2016 Kia Sorento?

Addressing the malfunction of a radiator fan in a 2016 Kia Sorento is not just a matter of convenience; it is a critical safety concern that demands immediate attention. A non-functioning radiator fan can lead to severe engine overheating, which poses a significant risk of catastrophic engine damage, including warped cylinder heads and cracked engine blocks. These repairs can be financially burdensome and time-consuming, making it essential to act swiftly. Additionally, a faulty fan can disrupt the coolant system, potentially causing low coolant levels or air pockets that may lead to further complications, such as engine seizure. This situation can escalate quickly, especially under demanding driving conditions like heavy traffic or steep inclines. While temporary fixes may provide a short-term solution, they are not substitutes for a proper repair. Therefore, if you notice any signs of a malfunctioning radiator fan, it is crucial to prioritize its repair to safeguard your vehicle's performance and longevity.

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2016 Kia Sorento Radiator Fan Not Working: Causes & Repairs