We explore the process of cloning a Volkswagen Golf 2017 ECM (Engine Control Module) using the OBDSTAR DC706 ECU cloning tool. The ECM in question is a Simos 18.1 (manufactured by Continental), a relatively new and complex unit that requires bench programming (via boot mode) for successful cloning.
Key Steps in the Cloning Process
1. Preparing the ECM
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The Simos 18.1 cannot be read via OBD; it must be disassembled and connected directly to the programmer.
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A microscope, precision soldering iron, flux, and adapters (MP001 and others) are essential for making the necessary connections to the circuit board.
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The OBDSTAR DC706 provides a pinout diagram to guide the wiring.
2. Reading the Original ECM
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The tool reads two critical components:
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Flash memory (slower to read, with progress shown in sectors).
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Eeprom (faster to read).
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The FC200 (another programmer) does not support the Simos 18.1, making the DC706 the preferred choice for this task.
3. Writing to the Replacement ECM
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After saving the original files, the same connections are made to the donor ECM.
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The DC706 writes the flash and eeprom data to the replacement module.
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Once completed, the cloned ECM should allow the vehicle to start without issues.
Why the OBDSTAR DC706 Stands Out
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Supports Newer ECUs: Unlike the FC200, the DC706 can handle the Simos 18.1/18.2, which are among the latest and more complex Volkswagen control units.
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Precision and Reliability: The tool provides clear guidance for bench programming, reducing errors during soldering and wiring.
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Proven Success: The video confirms the DC706 successfully read and cloned the ECM, with results to be verified in a follow-up test.
Challenges and Recommendations
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Complexity: The Simos 18.1 requires advanced soldering skills and proper equipment (microscope, quality solder).
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Adapter Compatibility: Using the correct adapters (e.g., MP001) is critical for establishing a stable connection.
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Patience Needed: Reading the flash memory is time-consuming, but the DC706 streamlines the process.