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Replacement of the ECU (Engine Control Unit) of the Audi A4

Model: Audi A4 B6 - Years 2000-2004
Part: Control unit

In this guide, we will see the main instructions that will allow us to disassemble and replace the ECU (Electronic Control Unit) of the Audi A4. First, let's open the hood of the vehicle and start removing the plastic cover located at the top, in order to access the ECU (located at the top right); we also remove the wiper arms. At this point, let's unscrew the side fastening screws, disconnecting the electrical wiring of the ECU to remove it; we will carry out its repair or replace it with the new original one, following the video tutorial to the end!

Posted on 21 January 2026 by ScegliAuto

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