This Technical Information Systems manual contains the Mercedes Chassis, Engine, Electrical and Climate Control manuals for each engine and chassis  in the R-163 ML Class model series from 1998-2005.

However this is not a comprehensive repair manual - it simply goes over the systems and changes from previous models. This is a great CD for those looking to gain more general knowledge, or to help understand what your technician is charging you for. You might be able to make some general repairs with information from the CD, but, if you are looking to fix something specific, the repair manual is a better choice.