BMW horn assembly replacement, made easy

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How much does a horn assembly replacement cost for BMW cars?

A typical BMW horn assembly replacement in the UK costs around £121 - £201. Depending on your BMW model and engine, and whether you live in a big city or a small one, the price of a horn assembly replacement on your vehicle can be higher or lower. We computed prices for some of the best-selling BMW cars in the UK in order to give you an idea of how much a horn assembly replacement costs.
Car modelFixter price range
Horn assembly replacement for BMW 3 Series£121 - £190
Horn assembly replacement for BMW 1 Series£121 - £190
Horn assembly replacement for BMW 5 Series£128 - £201
Horn assembly replacement for BMW X1£128 - £201
Horn assembly replacement for BMW X3£128 - £201
Horn assembly replacement for BMW X5£121 - £190
Horn assembly replacement for BMW 4 Series Coupe£128 - £201

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Our expert insights

What does a horn assembly do?

A functioning horn is an essential safety component of any vehicle on the road. The horn assembly refers to the system that allows you to sound your car’s horn. This usually includes the horn button (located in the centre of the steering wheel), the horn relay, and the horn(s) which are usually located under the bonnet.

What are the symptoms of a bad horn assembly?

Below are the top three symptoms that could indicate you need to replace your horn assembly:

  • Your horn makes no sound when the button is pressed

  • Your horn is too quiet to be heard by other road users

  • Clicking sound from the horn relay

What happens when we do a horn assembly replacement on your car?

Our certified mechanics will:

  • Inspect the entire horn assembly and identify the part(s) that need replacing

  • Disconnect the battery

  • Replace the necessary parts, either the button, relay or the horns

  • Reconnect the battery and test the horn

Daniel, from LondonDaniel, from London

Hey Fixter, can I drive with a failing horn assembly?

It is both unsafe and illegal to drive with a broken horn, as it is an essential safety feature in your car. Failing to replace a broken horn will also result in an MOT failure.

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Want to learn more about BMW horn assembly replacement?

What does a horn assembly do?

When the horn button (usually located in the centre of the steering wheel) is pressed, an electrical signal is sent to the horn relay, allowing power to flow to the horn(s) which are often located under the bonnet. This circuit is known as the horn assembly.

A functioning horn is an essential safety component of any vehicle on the road. As a driver, you’ll use the horn to warn others of your vehicle's approach or presence, or to call attention to a hazard on the road. In fact, if your horn is missing or broken and does not sound when pressed, then this will result in an MOT failure. So to avoid hassle and money in the long run, it's best to have a broken horn replaced as soon as possible.

BMW

BMW AG is a German automobile and motorcycle manufacturer that was established over 100 years ago in March 1916. They also own Mini and Rolls Royce, after taking over the two British marques in 2000 and 1998 respectively.

BMW makes luxury vehicles and is possibly most famous for its sports saloon models. In 2018, BMW had 1.9m vehicles on the roads in the UK, a number that has been steadily increasing each year for the past decade.

As one of the ‘big 3’ German marques, along with Audi and Mercedes, BMW carries a strong reputation for making high-quality stylish vehicles, and have captured a large section of the UK market.

Luxury family and business models for every driver

Probably most popular for the 3 Series and 5 Series saloon models, BMW has got every possible angle covered for the more discerning drivers.

The full range includes everything from the 1 Series city car to the full-size saloons and sports coupes of the 7 and 8 Series models.

To provide everything you’d ever need for family motoring there’s a seven-seat MPV, their range of X model SUVs, and since 2014, the introduction of their plug-in electric i models. Top it all off with their M model high-performance supercars, the Z4 convertible and the i8 Roadster—and you’ve got the full package.

BMW: High performance on and off the track

BMW has a successful history in a range of motorsports.

They have been significant performers in touring car racing and rally driving, enjoyed success in Formula One with the BMW Sauber team, and BMW cars have been regular competitors and winners at Le Mans since the race’s early years.

BMW’s reliability and reputation

BMW ranked 16th place out of 30 car brands in the What Car? Reliability Survey in 2018. BMW hasn’t always had the best reputation for reliability but to rank alongside marques such as Honda, Volkswagen and Fiat they’re holding their own alongside plenty of the other big names.

How often should a horn assembly need replacing?

In an ideal world your horn assembly should last the lifetime of the car, but there are instances where this is not the case. Just like any other electrical component in a vehicle, there will be times when the horn will need replacing due to corrosion, bad wiring, water damage or a faulty relay.

The law, vehicle regulations and your MOT

The functionality of your car horn will be checked as part of your MOT. A faulty or quiet horn is classed as a minor on the test, however if your horn is inaudible to other road users this will result in an MOT failure. To avoid the hassle and cost of an MOT fail, it’s best to have your horn fixed as soon as you notice an issue.

What causes a horn assembly to break?

Car horns are located just under the bonnet so they’re exposed to rain, debris and other nasties. If this dirt or rain gets into the horn’s innards, it can short out the circuit and break the vehicle horn (and blow the fuse in the process). However, a horn assembly consists of multiple components which could also affect the functionality of the horn. For example, a broken car horn can also be caused by a bad horn switch in your steering wheel, a broken “clock spring” under the steering wheel, a faulty horn relay, or bad wiring.

When should a horn assembly be replaced?

As soon as you notice that your horn is not as loud as it used to be or if there is no sound at all, you should have the horn assembly looked at by a mechanic as soon as possible. Without a working horn you could be a danger on the road and your car will almost certainly fail its next MOT.

What are the signs of a bad horn assembly?

Usually, there a few signs you can look for:

  • Your horn makes no sound when the button is pressed

  • Your horn is too quiet to be heard by other road users

  • Clicking sound from the horn relay

  • Burning smell from under the bonnet

What happens during a horn assembly replacement?

During the repair our certified mechanics will:

  • Inspect the entire horn assembly and identify the part(s) that need replacing

  • Disconnect the battery

  • Replace the necessary parts, either the button, relay or the horns

  • Reconnect the battery and test the horn

What is the average lifespan of a horn assembly?

A horn assembly is built to last the lifetime of the car, but there are instances where this is not the case. Just like any other electrical component in a vehicle, there will be times when the horn will need replacing due to corrosion, bad wiring, water damage or a faulty relay.

Can you drive with a broken horn assembly?

No, you should get your car horn fixed to ensure you are safe on the roads. It is both unsafe and illegal to drive with a broken horn, as it is an essential safety feature in your car. Failing to replace a broken horn will also result in an MOT failure.

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