Range Rover fan keeps running and won’t turn off

In my experience when my Range Rover fan keeps running and won’t turn off, by replacing the fan relay, checking the control module, and inspecting the wiring, you can often resolve the issue.

Parked up, switched off the engine, and noticed your Range Rover fan keeps running and won’t turn off – it’s happened to me and I know what could be the problem!

Read on to learn from my experience fixing this problem from the signs and symptoms, OBD codes that may appear, and how you can fix your Range Rover’s fan problems.

What models are affected?

Signs and symptoms

There are certain signs and symptoms you need to look out for.

Oftentimes, your Range Rover fan will keep running due to cooling the engine, however, if the Range Rover fan keeps running and won’t shut off after 15 minutes – it is a problem you need to fix.

Here’s what you might experience:

  • The fan continues running even after the vehicle has been turned off.
  • The fan operates at full speed regardless of the engine’s temperature.
  • Your Range Rover may occasionally overheat due to prolonged fan activity.

If your Range Rover’s fan keeps running after 15-30 minutes and still won’t shut off, then you should definitely try and investigate further, as there is obviously something the ECM is not liking about the engine temperature.

List of possible OBD codes

To really get a good idea of what the problem is and why your Range Rover fan keeps running, using an OBD code reader is like shooting fish in a barrel.

Look out for the following relevant codes:

  • P0480: Cooling Fan 1 Control Circuit Malfunction
  • P0481: Cooling Fan 2 Control Circuit Malfunction
  • P0485: Cooling Fan Power/Ground Circuit Malfunction

Buying guide: Best Land Rover OBD2 scanner tools

Common causes

In my experience, these are the most common causes of why your Range Rover fan keeps running. Nine times out of ten, it will be a malfunctioning fan control module, but it’s a Range Rover – so it could be anything!

  • Faulty Fan Relay: A deteriorated or stuck relay can cause the fan to continue running, even when it should be idle.
  • Malfunctioning Fan Control Module: If the control module responsible for regulating the fan’s behavior malfunctions, it can result in continuous operation.
  • Wiring Issues: Damaged or shorted wiring may disrupt the communication between the fan and the vehicle, leading to persistently running fans.

Can it be fixed without a mechanic?

If you are looking to save a few bucks and have zero experience in tinkering with Range Rovers – find the nearest wall and hit your head off said wall until you see sense…

While some basic Range Rover maintenance tasks might be straightforward, it’s best to consult a mechanic when dealing with Range Rover fan issues.

Electrical systems, especially with Range Rovers, can be finicky, and professional expertise ensures a proper diagnosis and effective solution.

Parts you’ll need to fix it

In preparation for your fan escapades, gather the following parts:

  • Replacement Fan Relay
  • New Fan Control Module (if required)

Tools you’ll need to fix it

Equip yourself with these handy tools to tackle the Range Rover fan that refuses to rest:

  • Socket Set
  • Screwdriver
  • Wire Cutters
  • Multimeter (for electrical testing)
  • Heat Shrink Tubing (for wiring repairs)

How to fix it

If you have experience working on your Range Rover, then follow this step-by-step guide:

  1. Disconnect the Battery: Ensure your Range Rover’s electrical system is powered down by disconnecting the negative terminal of the battery.
  2. Locate the Fan Relay: Identify the fan relay’s position in the engine compartment. Refer to your vehicle manual or consult online resources for assistance.
  3. Remove the Faulty Relay: Use the appropriate socket or screwdriver to carefully remove the faulty fan relay from its position.
  4. Install the Replacement Relay: Place the new relay in the vacant slot, ensuring a secure connection.
  5. Inspect the Fan Control Module: If the issue persists, locate the fan control module. It is usually positioned near the fan assembly.
  6. Replace the Fan Control Module (if necessary): Disconnect the wires connected to the faulty control module, carefully removing them. Install the new module by reconnecting the wires.
  7. Reconnect the Battery: Restore power by reconnecting the negative terminal of the battery.
  8. Test the Fan Operation: Start your Range Rover and observe the fan behavior. It should now operate as intended, engaging and disengaging according to temperature fluctuations.

Potential alternative causes

While the relay, control module, and wiring are often the primary suspects behind the ever-running fan, a few other issues might occasionally contribute.

These alternative causes can include:

  • Faulty Coolant Temperature Sensor
  • Blown Fuse
  • ECM (Engine Control Module) Malfunction

If the issue persists even after following the troubleshooting steps, I recommend seeking professional assistance to pinpoint and address these alternative causes.

FAQs

How can I tell if my Range Rover’s fan relay is faulty?

Look for signs like the fan not turning on when needed, or it running constantly. Overheating or warning lights can also indicate a faulty relay. Professional diagnosis is recommended.

What should I do if my Range Rover fan keeps running after I turn off the engine?

Continuous fan operation might be due to a faulty relay or sensor. Consult a mechanic as it may cause a dead battery or if your Range Rover keeps draining battery power.

Can a malfunctioning fan control module cause overheating issues?

Yes, a malfunctioning fan control module can lead to overheating problems by affecting proper cooling fan function.

Is it safe to drive my Range Rover if the fan runs continuously?

It’s not advisable to drive if the fan runs continuously. This could signal cooling system problems that may cause overheating. Consult a professional before driving to prevent potential engine damage.

Summary

A Range Rover fan that keeps running may be a cause for worry.

By replacing the fan relay, checking the control module, and inspecting the wiring, you can often resolve the issue.

However, it’s crucial to consult a mechanic for a thorough diagnosis if the problem persists.

Last updated and verified on 6th September 2023

One comment

  1. I have a new Range Rover P440e. Soemtimes when charging, the fans coming at full speed (screaming!). Can be at nightand is so loud that it wakes everyone up. My local dealer doesn’t seem very interested in it but booked the car in – in two months time! “We’ve got a lot of recalls” – oh dear!

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