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Where is the Control Module Located in the Audi A4?

Model: Audi A4 B9 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Part: Control unit

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Video tutorial

In this short video, we can see where the two control modules of the Audi A4 B9 are located and how to access them. The first module, called "BCM 1", is located inside the cabin, in the lower left area of the dashboard along with the fuses and the OBD port.

The second module, "BCM 2", is located in the trunk, behind the panel on the left side. If we need to replace them, we can disconnect the connectors by lifting the respective release levers upwards, as shown in the video.

Always work with the vehicle off and preferably with the negative battery terminal disconnected.


Updated on 5 June 2026 by ScegliAuto


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by ScegliAuto

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