1. Open the hood of your Mercedes Actros.
2. Locate the negative battery terminal (usually marked with a minus sign).
3. Disconnect the negative battery terminal by loosening the nut or bolt that holds it in place.
4. Leave the negative battery terminal disconnected for at least 30 seconds.
5. Reconnect the negative battery terminal.
6. Start your Mercedes Actros and let it run for a few minutes.
Method 2: Use a Scan Tool
1. Connect a scan tool to your Mercedes Actros.
2. Navigate to the "Reset ECU" or "Clear Memory" function in the scan tool's menu.
3. Follow the on-screen instructions to reset the ECU.
4. Start your Mercedes Actros and let it run for a few minutes.
Please note: Resetting the ECU will clear all stored fault codes and settings. If you have any specific fault codes or settings that you need to preserve, you should back them up before resetting the ECU.