2016 Audi RS7 Radiator Fan Isn't Working

Diagnosing the Causes of a Non-Functional Radiator Fan in Your 2016 Audi RS7 and How to Fix It

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Reviewed by
Devin Cabugcal
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 Audi RS7 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 Audi RS7 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 a non-working radiator fan in a 2016 Audi RS7?

To effectively diagnose a non-working radiator fan in a 2016 Audi RS7, it is essential to adopt a systematic diagnostic approach that begins with simpler checks before progressing to more complex issues. Start by inspecting the fuse related to the radiator fan, as a blown fuse is a common and easily rectifiable problem that can disrupt the fan's operation. If the fuse is intact, proceed to test the fan motor using a multimeter to check for continuity; a lack of continuity typically indicates that the motor may need replacement. Next, examine the wiring connected to the fan for any signs of damage, corrosion, or loose connections, as these can prevent the fan from receiving the necessary power. It is also crucial to assess the temperature sensor, which regulates when the fan should activate; ensuring its proper function is vital for the fan's operation. Additionally, test the relay that controls the power supply to the fan, as a malfunctioning relay can impede performance. Finally, utilizing a diagnostic tool to scan for error codes can help identify any specific issues within the cooling system. By following this structured approach, you can efficiently pinpoint and address the problem with the radiator fan in your Audi RS7.

What are the common causes for the radiator fan not working in a 2016 Audi RS7?

When troubleshooting a non-functioning radiator fan in a 2016 Audi RS7, it's essential to consider several common problems that could be at play. A faulty fan motor is often the primary suspect; if the motor fails, it won't spin, leaving the radiator without the necessary cooling. Additionally, a blown fuse can disrupt the power supply to the fan, rendering it inoperable. Another critical component to check is the temperature sensor, which plays a vital role in signaling the fan to activate when the engine reaches a certain temperature. If this sensor malfunctions, it may fail to trigger the fan when needed. Wiring issues, such as damaged or corroded connections, can also prevent the fan from receiving power, leading to operational failure. Lastly, ensure that the coolant level is adequate, as low coolant can inhibit the fan's function. Addressing these issues promptly is crucial to avoid overheating and potential engine damage, making it advisable for DIYers to conduct a thorough inspection or consult a qualified mechanic for a definitive diagnosis.

How urgent is it to address the non-functioning radiator fan in a 2016 Audi RS7 to prevent potential overheating and engine damage?

Addressing a non-functioning radiator fan in a 2016 Audi RS7 is of utmost urgency due to the significant risks it poses to the engine's health. The radiator fan is essential for maintaining optimal engine temperature by effectively dissipating heat generated during operation. When this component fails, the engine is at a heightened risk of overheating, which can lead to severe consequences such as warped cylinder heads, blown head gaskets, or even complete engine failure. Moreover, neglecting this issue can trigger a cascade of problems affecting other critical components like the water pump and thermostat, further complicating repairs and increasing costs. Therefore, it is imperative for Audi RS7 owners to promptly address any signs of radiator fan malfunction to prevent costly damage and ensure safe driving conditions. Taking swift action not only protects the engine but also enhances the overall reliability of the vehicle.

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2016 Audi RS7 Radiator Fan Not Working: Causes & Solutions