2003 Mercedes E-Class Owner's Manual - Page 376

Technical terms Control system The control system is used to call up vehicle information and to change component settings. Information and messages appear in the multifunction display. The driver uses the buttons on the multifunction steering wheel to navigate through the system and to adjust settings. Cruise control Driving convenience system for automatically maintaining the vehicle speed set by the driver. Distronic* A driving convenience cruise control system which helps the driver maintain a pre-selected speed: If there is no vehicle directly ahead, the system operates in the same way as conventional ->cruise control. If a slower moving vehicle is ahead, Distronic will reduce your vehicle speed to the extent permitted by reduced throttle and up to 20% braking power to maintain the preset minimum following distance. DTR (->Distronic*) Engine number The number set by the manufacturer and placed on the cylinder block to uniquely identify each engine produced. Engine oil viscosity Measurement for the inner friction (viscosity) of the oil at different temperatures. The higher the temperature an oil can tolerate without becoming thin, or the lower the temperature it can tolerate without becoming viscous, the better the viscosity. ESP (Electronic Stability Program) Improves vehicle handling and directional stability. 376