Mas-Engine Systems Control Unit
WARNING: This page does not describe the selected car, but rather 19 other vehicles, including the 1992 Mercedes-Benz 500E, 1992 Mercedes-Benz 400E, 1992 Mercedes-Benz 300TE, 1992 Mercedes-Benz 300E, and 1992 Mercedes-Benz 300D. However, it is still accessible from the selected car via links, so may be relevant.
Testing information is not available from manufacturer.