2013 BMW X6 Radiator Fan Isn't Working

Diagnosing the Causes of a Non-Functional Radiator Fan in Your 2013 BMW X6 and How to Fix It

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Reviewed by
Andrew Hajjar
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 2013 BMW X6 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 cause the engine cooling fan to operate improperly, leading to overheating or inadequate engine cooling.
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 2013 BMW X6 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 2013 BMW X6?

To effectively diagnose a non-functioning radiator fan in a 2013 BMW X6, it's essential to adopt a systematic approach that begins with the simplest solutions before progressing to more complex diagnostics. Start by checking the fuse associated with the radiator fan; a blown fuse is a common and easily fixable issue. If the fuse is intact, proceed to inspect the fan motor itself. Removing the fan and testing it with a known good unit can help determine if the motor is the source of the problem. Next, verify the fan relay, as it plays a critical role in controlling the fan's operation. If the relay is functioning properly, examine the temperature sensor, which regulates the fan based on engine temperature. Additionally, testing the fan control module is crucial, as it ensures the fan operates according to the vehicle's needs. If all these components are in working order, further investigation may be necessary to uncover any underlying issues that could be affecting the fan's performance. By following this structured diagnostic approach, you can efficiently identify and resolve the problem with your radiator fan.

What are the common problems that could cause the radiator fan to stop working in a 2013 BMW X6?

When diagnosing a non-functioning radiator fan in a 2013 BMW X6, it's essential to consider several common problems that could be at play. The fan assembly itself may be faulty, or the fan clutch could be malfunctioning, both of which are frequent culprits. Additionally, the coolant temperature sensor plays a critical role in regulating fan operation, and if it fails, the fan may not engage as needed. Electrical issues are also prevalent; a blown fuse or a defective relay can interrupt the power supply to the fan, preventing it from operating. Furthermore, inspect for any broken wires that could disrupt the electrical circuit. If the fan motor is damaged, it will need replacement to restore functionality. Addressing these issues promptly is crucial, as neglecting radiator fan problems can lead to overheating and significant engine damage, resulting in costly repairs. By understanding these common failure modes, DIYers can effectively troubleshoot and resolve radiator fan issues in their BMW X6.

How urgent is it to fix the radiator fan in a 2013 BMW X6 to prevent overheating?

Addressing radiator fan issues in a 2013 BMW X6 is not just a matter of convenience; it is a critical safety concern that demands immediate attention. The radiator fan is essential for maintaining optimal engine temperature by dissipating heat from the radiator. If the fan fails to operate, the engine is at a heightened risk of overheating, which can lead to severe mechanical failures and costly repairs. This risk is exacerbated in warmer climates, where the engine's cooling system is already under additional stress. Ignoring symptoms such as unusual noises from the fan or erratic temperature readings can result in catastrophic engine damage, leaving you with a hefty repair bill and potentially compromising your safety on the road. Therefore, it is imperative to prioritize fixing the radiator fan to ensure the longevity of your vehicle and to avoid the dangers associated with an overheated engine.

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Radiator Fan Not Working in 2013 BMW X6 Causes & Fixes