2006 Mercedes R-Class Owner's Manual - Page 531

Technical terms Collapsible tire An especially compact spare tire that must be inflated with a provided air pump before using. It should only be used to bring the vehicle to the nearest service station. 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. Curb weight ( page 386) DOT (Department of Transportation) ( page 386) 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. 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 PLUS (Canada vehicles) (Flexible Service System PLUS) Maintenance service indicator in the speedometer 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 service, and calls for the next maintenance service accordingly. GAWR (Gross Axle Weight Rating) ( page 386) 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 gear selector lever. 530