Mercedes used to have A and B services (A was simple oil change, B was a more comprehensive inspection), but starting around the time of the current E class models the service indicator now goes to C, D, E and beyond as the miles increase. I had a D service done on my E320 at around 50K miles - which was an oil change and basic inspection (like the old A service). The dealer probably has a list of services required by code. The most expensive routine thing to change are the brakes - seem to wear very quickly on most mercedes, but especially this model - and are not cheap to replace - also not easy to do outside the dealer's shop - since you need to disconnect the electronic braking system to change pads and rotors.
It means the car needs just a minor service; oil change, general check-over
what is the "E service" for a 2006 mercedes benz E350
What is service a for marcedes Benz c 240
The 2003 Mercedes-Benz S-Class has a V8 engine.
The 2003 Mercedes-Benz SL-Class has a V8 engine.
The 2003 Mercedes-Benz CL-Class has 24 valves.
The 2003 Mercedes-Benz CL-Class has a V8 engine.
The 2003 Mercedes-Benz G-Class has 24 valves.
The 2003 Mercedes-Benz S-Class has 24 valves.
The 2003 Mercedes-Benz E-Class has 18 valves.
The 2003 Mercedes-Benz M-Class has 18 valves.
The 2003 Mercedes-Benz M-Class has a V6 engine.