2006 Mercedes S-Class Owner's Manual - Page 446

Technical terms 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. DOT (Department of Transportation) ( page 323) Engine number The number set by the manufacturer and stamped 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. ETD (Emergency Tensioning Device) Device which deploys in certain frontal and rear collisions exceeding the system's threshold to tighten the seat belts. ->SRS FSS (Canada vehicles) (Flexible Service System) Maintenance service indicator in the multifunction display that informs the driver when the next vehicle maintenance service is due. FSS evaluates engine temperature, oil level, vehicle speed, engine speed, distance driven and the time elapsed since your last maintenance service, and calls for the next maintenance service accordingly. GAWR (Gross Axle Weight Rating) ( page 323) Gear range Number of gears which are available to the automatic transmission for shifting. The automatic gear shifting process can be adapted to specific operating conditions using the selector lever. 445