Automatic Coding
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2000 Mercedes-Benz ML320, 2000 Mercedes-Benz E320, 2000 Mercedes-Benz CLK320, 2000 Mercedes-Benz C280, and 1999 Mercedes-Benz ML320. However, it is still accessible from the selected car via links, so may be relevant.
Before removing Engine Control Module (ECM), using HHT, read and store existing version code. After installation of new module, download previous version code using HHT.