While it may not seem like an important part of your vehicle, your radiator fan plays a key role in safe operation. If your radiator fan is going bad or has failed, you’re probably wondering how much it will cost to replace it. 

Typically, the cost of replacing your radiator fan will range between $400-$1,000. The average price is typically between $500-$700. If you have the knowledge, skills, and tools to do so, you can save a couple of hundred dollars by replacing it yourself.

Below, we’ll discuss more information on the cost of replacing your radiator fan. Keep reading to learn everything you need to know about all this and more.

How Much Does It Cost to Replace a Radiator Fan?

When your radiator fan stops working, a bad motor may be the cause. If this is the case, you typically need to replace the radiator fan assembly. 

The exact cost of replacing your radiator fan will vary based on a couple of factors. These include the make and model of your vehicle and whether you replace it yourself or have a technician do it. The shop you take your vehicle to will also impact the price.

How Much Will It Cost for a Mechanic to Replace?

Most mechanic shops charge between $75-$125 per hour for labor. Replacing a radiator fan takes anywhere from 1.5-3 hours, making the average cost of labor between $115-$375. 

Depending on your vehicle, a new radiator fan assembly could cost anywhere from $100-$600. After all, is said and done, it could cost you between $400-$1,000 to have your radiator fan replaced professionally.

The table below highlights the average cost for a mechanic to replace the radiator fan in a few different vehicles makes. While these are the average prices, the actual cost may differ based on where you live and your vehicle’s model. 

Vehicle Make	Low Estimate	High Estimate
BMW	$460	$975
Dodge	$285	$560
Ford	$250	$675
Honda	$300	$675
Volkswagen	$350	$675

How Much Will a DIY Replacement Cost?

If you have a good working knowledge of car repairs, replacing the radiator fan yourself is an option. Because you’re not paying a mechanic for your labor, this can significantly decrease your total investment. 

As mentioned above, a new radiator fan assembly costs anywhere from $100-$600. In the table below, you can see the average cost of this assembly for several types of vehicles.

Vehicle Make	Low Estimate	High Estimate
BMW	$230	$600
Dodge	$90	$250
Ford	$100	$300
Honda	$90	$200
Volkswagen	$100	$350

In addition to the fan assembly, you’ll also need the right tools for the job.

Luckily, none of these tools are very expensive. You may even have many of them laying around your garage! Here’s what you can expect to pay for each tool.

Tool Needed	Average Price
Plier set	$20-$40
Socket set	$40-90
Wrench set	$60-$90
Screwdrivers	$10-$50

If you have all these tools, you will only need to purchase the fan. If you don’t have any of them, however, plan to spend an extra $130-$260. 

What Does a Radiator Fan Do?

Your vehicle’s radiator fan plays a key role in preventing the engine from overheating. As you drive, air flows over your coolant naturally, keeping the engine at the right temperature. However, when you are driving slowly or idling, the radiator fan needs to turn on to keep the coolant flowing. 

A thermostat in your radiator controls the radiator fan. Older vehicles typically use a built-in clutch to control this. In newer engines, the fan is controlled by an electric motor. 

A properly-functioning radiator fan is necessary to prevent your engine from overheating while idle. If the fan ever stops working, you risk severe engine damage. 

Symptoms of a Bad Radiator Fan

There are a few ways you’ll be able to tell that your radiator fan is not working properly.

A few of these symptoms can signify other problems with your vehicle. However, have the problem diagnosed if you notice more than one at once.

Overheating

Because the coolant is not getting enough airflow when idle, you may notice a rising engine temperature. This will be highest while your vehicle is idle, and it will lower once you start moving again. 

Overheating can cause severe engine damage in a short amount of time. If you notice your vehicle overheating while you drive, pull over and turn your car off. 

Noise Coming from the Fan

If your radiator fan is wearing out, you might hear a whirring sound or loud clicking coming from under the hood. This can also happen if the fan blades wear out and make contact with other engine components. 

An Illuminated Check Engine Light

Sometimes, your engine will recognize an issue with the radiator fan and turn on the check engine light. This will typically only happen if the fan has failed completely.

In some vehicles, the computer will recognize a problem with the air conditioning system, also illuminating the check engine light. 

Air Conditioning Blowing Out Hot Air

In addition to helping with coolant airflow, your radiator fan also helps remove heat from the air conditioning system. Air from the fan blows across the air conditioning condenser, cooling the air that enters your vehicle. 

When the radiator fan is damaged, the condenser will fail. This means that warm air will blow out of your cabin’s vents, even when the air conditioning is on full blast. 

Can You Drive with a Bad Radiator Fan?

You should never drive without a working radiator fan. When your fan is not able to provide airflow to the coolant system, overheating is very likely. 

This is especially important if you live in an area with heavy traffic. Whenever your vehicle is idle, it’s susceptible to overheating. Overheating can cause severe engine damage quickly, and may even lead to a seized engine. 

How Often Does a Radiator Fan Need to be Replaced?

Most newer cars use electric radiator fans, which are much less prone to problems than mechanical fans. Because of this, most vehicles do not need their fans replaced on a regular basis. 

While many radiator fans last for the vehicle’s entire lifetime, they still can fail. However, this is usually a one-time occurrence. 

How to Diagnose a Bad Radiator Fan

Typically, overheating is one of the first signs you’ll notice in a bad radiator fan. However, many different things could be causing engine overheating.

Before you take the next step, check your air conditioning system. Turn on your engine, then turn on the air conditioning. If the air continuously blows out warm, there’s probably a problem with the radiator fan. 

How to Replace a Radiator Fan

Before you decide to replace your radiator fan on your own, be sure you have the proper skills and tools. Replacing this fan requires removing a lot of components, including screws, bolts, and potentially, hoses.

Once you have everything you need, follow the steps below to successfully install a new radiator fan.

1. Open your hood and locate your radiator fan. Then, make note of anything obstructing your access, like ductwork, brackets, screws, or hoses. You will eventually have to remove anything in the way in order to access the assembly. 
2. Next, disconnect your battery from both the positive and negative terminals. This will prevent anything from starting the fan while you’re trying to remove it. 
3. Now, you can begin removing anything in the way of your fan assembly. As you remove each component, set it aside for later reconnection.
4. Find the electrical connector for your fan motor, then unplug it. If there’s a lot of debris on it, you may need to use your screwdriver to pry the plug out. 
5. Remove any hardware that is holding the old fan assembly in place. Then, carefully pull it off to remove it. This shouldn’t be too difficult, so make sure there’s nothing still connected if you’re having trouble. 
6. Once the old assembly is out, you can install the new one. Place it into your vehicle, then reconnect anything you disconnected.
7. Before you finish, double-check to be sure you’ve reconnected everything properly. Since there are so many parts holding the fan in place, it’s very common to forget something.
8. Reconnect your car’s battery.
9. Finally, turn on your vehicle and check to make sure the new assembly is working. Get your engine up to operating temperature, and check to be sure it does not overheat. You can also try turning on your air conditioning to make sure it blows out cold air. 

Can a Radiator Fan be Repaired?

There are many reasons why your radiator fan may fail. Out of all these causes, only a broken motor or damaged blades will warrant a full radiator fan assembly replacement. If you have vehicle diagnostic skills, you may be able to pinpoint the exact problem.

If you do not have the skills to diagnose your fan problem, bring it to a mechanic. They’ll be able to tell you exactly what’s causing the issue. If the problem is due to any of the following issues, you will need to address it in another way.

A Damaged or Blown Fuse

Almost every electrical component of your car is powered by an electric fuse. Blown fuses occur when the electrical surge cuts power to a certain component. Whatever the fuse was powering will no longer work until you get it replaced. 

A fuse is an easy, inexpensive fix. However, a blown fuse could signify other problems with your radiator fan. 

Blown Fuse Replacement	Cost
Low Estimate	$10
High Estimate	$20

Low Coolant Levels

When your coolant is low, there’s a better chance for air to enter the system. This may cause your coolant temperature sensor to malfunction, leading to the fan not turning on when it should. In order to prevent problems with your radiator fan, always make sure to maintain the proper level of coolant. 

Coolant Replacement	Cost
Low Estimate	$10
High Estimate	$30

Inefficient Coolant Temperature Sensor

Your coolant temperature sensor is what tells your fan when to turn on or off. If the sensor stops working correctly or breaks, it cannot tell the computer when to turn the fan on. 

Coolant Temperature Sensor Replacement	Cost
Low Estimate	$120
High Estimate	$160

Corroded Fan Controller Module

In some vehicles, there is a separate control module for the radiator fan. It’s typically located in the engine bay, where it’s exposed to a lot of heat, dust, and debris. Over time, this could lead to corrosion, causing it to work improperly. 

Fan Controller Module Replacement	Cost
Low Estimate	$250
High Estimate	$400

Bad Electrical Connections

Over time, your vehicle’s electrical connectors could begin to corrode due to normal wear and tear. If any of the plugs or wiring to the radiator fan have corroded, the fan may stop working. 

Electric Connector Replacement	Cost
Low Estimate	$10
High Estimate	$20

Broken Radiator Fan Relay

In vehicles with an electrical fan, a radiator fan relay controls the fan’s operation. This relay is usually between the coolant system and the radiator fan assembly. If you have a faulty relay, the fan may not turn on when it’s supposed to. 

Radiator Fan Relay Replacement	Cost
Low Estimate	$60
High Estimate	$70

The Bottom Line

Depending on many factors, replacing a radiator fan could cost anywhere from $400-$1,000. Replacing it yourself can save you some money in labor costs. However, you need the proper knowledge and tools to replace it successfully. 

Make sure to remedy any problems with this fan as soon as possible. If you ignore it for too long, you risk severe engine damage in the near future.