Range Rover Horn Not Working

The main causes for your Range Rover horn not working are blown fuses, bad relay, faulty horn, or broken horn button.

If the horn does not honk in your Range Rover when you press one of the buttons on the steering wheel, it can be caused by various reasons. Read on to see the main causes of your Range Rover horn not working.

What models are affected?

Signs and symptoms

When faced with the dreaded problem of a silent horn, you might experience the following signs:

No sound when pressing the horn button
Weak or intermittent horn sound
Unusual horn sound pitch or tone

List of possible OBD codes

In some cases, your Range Rover’s onboard diagnostic (OBD) system might provide relevant error codes related to the horn issue:

P0693: Horn Relay Control Circuit Low Voltage
U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module
B0082: Horn Switch Circuit Malfunction

Common causes

There are several common causes that can lead to a non-functional Range Rover horn.

Here are a few:

Blown Fuse: A blown fuse might be the culprit behind a malfunctioning horn. Check the fuse related to the horn circuit in the fuse box.
Faulty Horn Relay: A faulty horn relay can prevent power from reaching the horn itself. Test or replace the relay to see if that resolves the issue.
Damaged Horn Button: If the horn button on your steering wheel is damaged or stuck, it can obstruct the electrical connection, resulting in a non-working horn.
Broken Wiring or Connector: A damaged or loose wire or connector can disrupt the electrical flow to the horn, causing it to malfunction.

Can it be fixed without a mechanic?

In some cases, you can fix the issue without the help of a mechanic.

However, it depends on the specific cause of the horn problem and your comfort level with automotive repairs.

If you’re confident in your abilities and have the necessary tools and parts, you can give it a shot.

Otherwise, it’s advisable to consult a professional.

Parts you’ll need to fix it

To rectify a troublesome horn, you might require the following parts:

Replacement fuse
Horn relay (if necessary)
Horn button (if necessary)
Electrical connectors (if necessary)

Tools you’ll need to fix it

Equipping yourself with the right tools can make the troubleshooting and repair process smoother.

Here’s what you’ll need in your toolbox:

Multimeter
Screwdriver set
Wire cutters/strippers
Electrical tape
Socket set

How to fix it

Identify the Fuse: Locate the fuse box in your Range Rover. Refer to the owner’s manual to find the specific fuse related to the horn circuit.
Check the Fuse: Remove the fuse using a fuse puller or a pair of needle-nose pliers. Inspect the fuse for any signs of damage or a blown filament. Replace it if necessary.
Inspect the Horn Relay: Locate the horn relay, typically found in the fuse box or a nearby relay box. Test the relay by swapping it with a similar one from a different component. If the horn works with the swapped relay, replace the faulty horn relay.
Examine the Horn Button: Inspect the horn button on your steering wheel for any visible damage or stuck position. Gently press the button a few times to see if it makes any difference. If the button appears damaged or non-responsive, consider replacing it.
Check Wiring and Connectors: Inspect the wiring leading to the horn and check for any visible damage or loose connections. Repair or replace any damaged wires or connectors as needed.
Test the Horn: With all the necessary repairs or replacements done, test the horn to ensure it’s functioning correctly. Give it a few honks, and if you hear the familiar horn sound, you’ve successfully resolved the issue!

Potential alternative causes

While the aforementioned causes are typically responsible for a non-working Range Rover horn, there are a few less common issues that could also be at fault:

Faulty Clock Spring: A broken clock spring, located in the steering column, can disrupt electrical connections and affect the horn’s functionality. This is more common in older Range Rover models.
Electrical System Malfunction: In rare cases, a broader electrical system malfunction could be affecting the horn along with other components. Consult a professional if you suspect this to be the case.

FAQs

How do I know if the horn relay is bad?

If the horn relay is bad, your horn might not work at all. You can test the relay by swapping it with a similar relay from another component and seeing if the horn starts working. Alternatively, you can use a multimeter to test the relay’s continuity and functionality.

Can a blown fuse cause the horn to stop working?

Yes, a blown fuse can definitely cause the horn to stop working. Fuses protect electrical components, and if the fuse related to the horn circuit is blown, it will prevent power from reaching the horn.

What should I do if my horn makes a weak sound?

If your horn makes a weak sound, it could be due to a variety of reasons, such as a damaged horn, low voltage, or a poor connection. Start by checking the fuse, relay, and horn wiring for any issues. If those are fine, the horn itself might need replacement.

Is it possible to replace the horn button myself?

Replacing the horn button on your steering wheel can be more complex than other horn-related tasks. It often involves removing the steering wheel, which requires specific tools and knowledge to ensure safety and proper installation. If you’re not experienced with this type of repair, it’s recommended to consult a professional.

Can a malfunctioning clock spring cause other issues in my Range Rover?

Yes, a malfunctioning clock spring can lead to various issues beyond just the horn. The clock spring is responsible for maintaining electrical connections between the steering wheel and the rest of the vehicle’s electronics. If it fails, it can affect the horn, airbag system, cruise control, and other components connected to the steering wheel.