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Where is the ECU Located in a BMW 1 Series?

Model: BMW Serie 1 MK 3, F40 - Years: 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Part: Control unit

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Video tutorial

In this short video, you can see where the ECU is located in a BMW 1 Series F40, useful if you need to replace it. As shown, it is located inside the engine bay, precisely on the right wall of the battery on the driver's side. To remove it, simply disconnect all the front connectors and the negative terminal of the battery, and unscrew the various mounting bolts.

To make the job easier, it is possible to first remove the battery itself to create more space. Once the operation is complete, ensure that you securely reconnect the connectors.


Updated on 9 August 2026 by ScegliAuto


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How to Remove the Toll Tag Holder from the Car Windscreen

The toll tag holder is usually attached to the car windscreen to ensure that the toll tag functions immediately when passing through barriers. However, if you decide to remove the holder, you should follow this procedure: - Insert the toll tag into the holder; - Pull the holder inwards to detach it from the windscreen; you can use a glass scraper or a stiff plastic card to assist you; After removing the holder, it is essential to remove the adhesive from the windscreen. To remove the adhesive, we recommend using a solvent-based spray that will remove the glue without clouding the area.

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by ScegliAuto

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