2015 Volkswagen GTI Radiator Fan Isn't Working

Repair Radiator Fan Not Working in 2015 Volkswagen GTI

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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 2015 Volkswagen GTI 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 2015 Volkswagen GTI 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

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 2015 Volkswagen GTI?

When diagnosing a non-functioning radiator fan in a 2015 Volkswagen GTI, it's crucial to follow a methodical approach that starts with the simplest solutions before tackling more complex issues. Begin by checking the fuse related to the radiator fan, as a blown fuse is a common culprit that can easily be replaced. If the fuse is intact, the next step is to inspect the relay that controls the fan; a faulty relay can prevent the fan from receiving power. After that, test the fan motor directly by applying power to it; if the fan does not operate, it may need to be replaced. Additionally, examine the temperature sensor, which is responsible for signaling the fan to activate when the engine reaches a certain temperature. It's also important to inspect all wiring and connections for any signs of damage or looseness, as these can disrupt the fan's operation. Finally, using a diagnostic tool to scan for error codes can help identify any specific issues within the cooling system. By systematically addressing these areas, you can effectively diagnose and resolve the issue with your radiator fan, ensuring your vehicle maintains optimal cooling performance.

What are the common problems that could cause the radiator fan to stop working in a 2015 Volkswagen GTI?

When diagnosing why the radiator fan in a 2015 Volkswagen GTI has stopped working, it's crucial to consider several common problems that could be at play. A faulty fan motor is often the primary suspect, as it can fail to spin, leading to overheating. Additionally, a blown fuse in the fan circuit can interrupt the power supply, effectively shutting down the fan. Another potential issue is a defective temperature sensor, which may fail to signal the fan to activate when the engine reaches a certain temperature. Over time, the fan blades themselves can wear out or sustain damage, diminishing their cooling efficiency. Lastly, electrical issues such as loose connections or corroded terminals can disrupt the flow of electricity to the fan, preventing it from operating. Addressing these problems promptly is essential to avoid engine overheating and ensure the longevity of your vehicle. Regular inspections and maintenance can help you catch these issues early, allowing for a smoother DIY repair process.

How urgent is it to repair the non-functioning radiator fan in a 2015 Volkswagen GTI to prevent engine overheating?

Addressing a non-functioning radiator fan in your 2015 Volkswagen GTI is not just a matter of convenience; it is a critical safety concern that requires immediate attention. The radiator fan is essential for regulating the engine's temperature, and without it, the risk of overheating increases dramatically. Overheating can lead to severe engine damage, such as warped cylinder heads or blown head gaskets, which can result in costly repairs and extensive downtime. Moreover, the danger of an overheated engine is heightened in hot weather or during stop-and-go traffic, where the engine can reach critical temperatures quickly. Ignoring the symptoms of a failing radiator fan can leave you stranded on the road, posing not only a financial burden but also a safety hazard. Therefore, it is imperative to prioritize the repair of your radiator fan to ensure the longevity of your vehicle and to maintain safe driving conditions.

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2015 Volkswagen GTI Radiator Fan Issues: Symptoms & Repairs