Mercedes Service CD (Part # W211 589 14 22 00) an official firmware update disc designed for the COMAND NTG1
The Service CD is not a complete Workshop Information System (WIS). It generally does not contain detailed teardown and rebuild instructions for the engine block, complex wiring diagrams, or diagnostic troubleshooting trees for obscure fault codes. Those are found in the full WIS software suite. However, for 90% of owners looking to keep their cars running smoothly, the covers the most essential ground. Mercedes Service CD W211 589 14 22 00