DS fuel pump relay replacement, made easy

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How much does a fuel pump relay replacement cost for DS cars?

A typical DS fuel pump relay replacement in the UK costs around £48 - £97. Depending on your DS model and engine, and whether you live in a big city or a small one, the price of a fuel pump relay replacement on your vehicle can be higher or lower. We computed prices for some of the best-selling DS cars in the UK in order to give you an idea of how much a fuel pump relay replacement costs.
Car modelFixter price range
Fuel pump relay replacement for DS 3£62 - £97
Fuel pump relay replacement for DS 3 II£48 - £76
Fuel pump relay replacement for DS 4 II£60 - £94
Fuel pump relay replacement for DS 5£62 - £97
Fuel pump relay replacement for DS 7 Crossback£60 - £94

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Our expert insights into fuel pump relay replacement

What does a fuel pump relay do?

The fuel pump relay is the electronic component that controls power to the fuel pump. It is found on virtually all vehicles with an internal combustion engine and is often located in the fuse box which can be found in the engine bay.

What are the signs of a bad fuel pump relay?

Below are the top three symptoms that could indicate you need to replace your fuel pump relay:

  • Poor fuel economy

  • Trouble starting your car

  • Poor engine performance - stalling, poor acceleration, rough idling

What happens when we do a fuel pump relay replacement on your car?

Our certified mechanics will:

  • Inspect the entire fuel system and test it for any issues

  • They will then locate the fuse box, usually found in the engine bay

  • If necessary, they will remove the old relay and replace it with a new one

  • They will they retest the fuel system and check the fuel pump is working

Daniel, from LondonDaniel, from London

Hey Fixter, what are the signs of a bad fuel pump relay?

The most common signs of a bad fuel pump relay are poor fuel economy, difficulty starting your car and poor engine performance.

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Want to learn more about DS fuel pump relay replacement?

What does a fuel pump relay do?

The fuel pump relay is the electronic switch that controls power to the fuel pump. It is found on virtually all vehicles with an internal combustion engine and is often located in the fuse box which can be found in the engine bay. The fuel pump relay is also responsible for helping your vehicle to start. The relay activates the fuel pump to pressurise the fuel system as you turn the key.

The fuel pump is a small pump which sends the fuel from the tank to the engine. The pump may be mechanically worked by the engine, but on most modern cars it’s electrically-powered. In this case it’s usually found next to or even inside the fuel tank.

This process of pumping fuel from the tank to the engine is essential in the smooth running of your vehicle, therefore a faulty fuel pump relay will cause major performance and drivability issues with your vehicle.

DS

DS is the premium automobile marque of the Groupe PSA. First announced in 2009 by Citroën as its premium sub-brand; it was suggested to be an abbreviation of different spirit or distinctive series. However, in French, the name is considered a play on words, as the translation of déesse becomes goddess in English.

As a newcomer to the UK market in its own right, there were around 35k DS cars on the roads in the UK by the end of 2018. Whether those figures will continue to rise at the same rate shown since their introduction in 2015, only time will tell.

Looking to provide a standalone marque to initially compete with brands such as Volkswagen and Audi, PSA decided that neither Citroën nor Peugeot would be able to carry the brand strength that would be able to make a serious threat in the market with an elevated price-point at the level of quality and luxury they set out to achieve.

DS: Establishing a new range of upmarket models

To compete with the likes of Audi, BMW and Mercedes-Benz, DS introduced a range of hatchbacks, saloons and SUVs but it’s undoubtedly their supermini city car that is proving the most popular.

The DS3, sold as a 3-door hatchback or a convertible, is available in countless customisation options and also as the subcompact luxury crossover SUV DS3 Crossback. The DS3 was voted Car of the Year by Top Gear Magazine, and first place supermini four times in a row in the JD Power Satisfaction UK Survey.

DS: Don’t be fooled into thinking they’re just a one trick pony

At the other end of the range you’ll find the DS7 Crossback. Here’s a large SUV designed to compete directly with the Audi Q5, the BMW X3 and the Mercedes-Benz GLC; that’s quite a jump for a car that’s built by Citroën.

The models that you’ll find between the DS3 and the DS7 are created with the same style for the market in mind. The DS4, a mixture of hatchback and SUV, and the DS5, a bigger hatchback priced and pitched against the Audi A4, the BMW 3 Series and the Mercedes C-Class saloons.

How often should a fuel pump relay need replacing?

There is no set lifespan of a fuel pump relay, however the relay is designed to last the life of the car, but due to its constant use and the high temperatures it is exposed to, it will not usually last that long. Over time, the fuel pump relay may begin to show signs of wear and will have to be replaced.

The most commonly damaged portions of the fuel pump relay that tend to malfunction first are the coil and contact points. Usually, these parts of the relay will begin to oxidise and rust over time.

The law, vehicle regulations and your MOT

If the fuel system is not working properly, this may result in an MOT fail. Similarly, if a failing fuel pump relay has caused your check engine light to illuminate, this could lead to an advisory or failure.

What causes a fuel pump relay to break?

The fuel pump relay can fail for many reasons, from dust to electrical power surges, or a blown fuse to a fault in the pump. Many things can affect the functionality of the fuel pump relay.

What are the signs of a failing fuel pump relay?

Usually, there a few signs you can look for:

  • Poor fuel economy

  • Trouble starting your car

  • Poor engine performance - stalling, poor acceleration, rough idling

  • Check engine light

  • Car stops whilst driving

How often should you replace your fuel pump relay?

There is typically no maintenance schedule for fuel pump relay replacement. However, it may not be a bad idea to replace the fuel pump and the relay on an older, high mileage vehicle. Regularly maintaining small components such as the fuel pump relay could save you costly repair bills down the line.

What happens during a fuel pump relay replacement?

During the repair our certified mechanics will:

  • Inspect the entire fuel system and test it for any issues

  • They will then locate the fuse box, usually found in the engine bay

  • If necessary, they will remove the old relay and replace it with a new one

  • They will they retest the fuel system and check the fuel pump is working

What is the average life of a fuel pump relay?

There is no set lifespan of a fuel pump relay, however over time, the fuel pump relay can begin to show signs of wear and will have to be replaced. The fuel pump relay is designed to last the life of the car, but due to its constant use and the high temperatures it is exposed to, it will not usually last that long.

The most commonly damaged portions of the fuel pump relay that tend to malfunction first are the coil and contact points. Usually, these parts of the relay will begin to oxidise and rust over time.

Can you drive with a broken fuel pump relay?

It is best to avoid driving with a failing fuel pump relay. If the fuel pump relay has an issue, power may be randomly cut off to the fuel pump, which will cause the engine to stall whilst driving. Problems with your fuel pump relay will also result in frequent stalling and poor fuel economy, problems which are inconvenient and costly. It’s always best to have a faulty fuel pump relay checked as soon as possible to avoid these issues.

What happens if you don't change the fuel pump relay?

If the fuel pump relay has an issue, power may be randomly cut off to the fuel pump, which will cause the engine to stall whilst driving. Problems with the relay may also result in frequent stalling and poor fuel economy, which are both inconvenient and costly.

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