DTC P1642: Me-SFI Control Module Incorrectly Coded: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 Mercedes-Benz ML320, 2002 Mercedes-Benz E320, 2002 Mercedes-Benz CLK320, 2001 Mercedes-Benz ML320, and 2001 Mercedes-Benz E320. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This trouble code is set because the ME-SFI control module was coded to a manual transmission when vehicle is equipped with an automatic transmission.