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How to Reset the ECU of the Mercedes E 320 CDI

Model: Mercedes Classe E W211 - Years 2002-2009
Part: Control unit

In this guide, you will find the instructions needed to reset the engine control unit (ECU) of the Mercedes E-Class. First, open the hood of the vehicle and disconnect the battery. Then, remove the engine control unit by unscrewing the screws and disconnecting the wiring harness. At this point, reset the ECU using dedicated software by connecting the computer to the ECU through the appropriate port. Once the reset is complete, reconnect and reinstall the ECU in the vehicle, ensuring proper functionality.

Posted on 14 March 2026 by ScegliAuto

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