Porsche PIWIS 3 (PST3) is an advanced diagnostic tool that can read and clear trouble codes and display ECU information. To access Engineering Mode (E Mode) for advanced diagnostics and coding, follow these steps:

1. Disconnect Vehicle Connection:Before setting Engineering Mode, disconnect your vehicle from the Porsche PIWIS 3 diagnostic interface.

2. Set Diagnostic Configuration: Configure the system diagnostic settings according to the model series. This applies to models such as the 911, 981, 918, 970, Cayenne, and 2011 and later Macan.

3. Reconnect Your Vehicle: After configuring, reconnect your Porsche vehicle and use the Porsche PIWIS 3 VCI (Vehicle Communication Interface).

4. Model Identification: The tool will either automatically identify the model or allow you to select it manually. Enter the diagnostic content to proceed.

5. Enable Engineering Mode: Confirm that Engineering Mode is activated. You will see the ECU names in German, indicating that you can now perform coding and modifications to ECU information.

If you need further assistance, please contact us at Sales@obd2.ltd or visit our website: [https://www.obd2.ltd](https://www.obd2.ltd).