It is a computer that manages the engine's operation in real time, receiving data from sensors (such as fuel quantity, air intake, temperature, etc.) and adjusting the actuators so that the car can perform at its best while consuming the least amount of fuel. The moment it detects that something is not working properly, or if it becomes damaged, the engine cannot function.

There is no fixed location, as each manufacturer places it in a different spot. It is most commonly found under the hood, near the battery or the fuse box, although it can also be located near the windscreen scuttle area or inside the car, behind the glove box or under the dashboard.

We won't sugarcoat it — this is one of the most expensive components in a car, and the cost of replacement can easily exceed 1,500 euros, especially on newer models.

As we mentioned earlier, this is one of the most expensive components to repair and replace in a vehicle. So, if you don't want it to sting when you have to change this part, we recommend buying the ECU from our auto recycler. The price will depend on the car model, but as you'll see in our catalogue, we have ECUs for cars starting from just over 10 euros.

Before fitting the new ECU and getting it to work, a professional will need to clone the software from the old unit onto the new one in order to unlock the vehicle.

Above all, make sure it matches the manufacturer's reference number — a code made up of numbers and letters found on the sticker on the part itself. In other words, it is not enough for the car and year of manufacture to match; the reference must be correct. If you are having trouble finding one that matches your vehicle, get in touch with us. Give us all the relevant information — the manufacturer's reference, the vehicle model, and the make — and we will find it for you.

All parts from our online auto recycler come with a warranty. You can use the part for years and still request a replacement if any issue arises. Of course, the part must not have been tampered with or altered before fitting it into the car's engine.

We would not recommend it unless you have a small workshop in your garage and solid mechanical knowledge. A single mistake in the process could leave you without a car until you get it to a mechanic, along with the towing costs that would involve.

We will dispatch your order within 24–48 hours of confirming that payment has been successfully processed. If you live near our salvage yard or are able to come and collect it, simply let us know at the time of purchase and we will set it aside for you to pick up.