2003 Mercedes C-Class Owner's Manual - Page 344

Technical terms Poly-V-belt drive Drives engine-components (alternator, AC compressor, etc.) from the engine. Power train Collective term designating all components used to generate and transmit motive power to the drive axles, including engine clutch/torque converter transmission transfer case* drive shaft axle shafts/axles Program mode selector switch Used to switch the automatic transmission between standard operation S and winter operation W. Remote Vehicle Diagnostics Transmission of vehicle data and current location to the Mercedes-Benz Customer Assistance Center for subscribers to Tele Aid service. Restraint systems Seat belts, belt tensioners, airbags and child restraint systems. As independent systems, their protective functions complement one another. RON (Research Octane Number) The Research Octane Number for gasoline as determined by a standardized method. It is an indication of a gasoline's ability to resist undesired detonation (knocking). The average of both the ->MON (Motor Octane Number) and RON (Research Octane Number) is posted at the pump, also known as ANTI-KNOCK INDEX. Shift lock When the vehicle is parked, this lock prevents the transmission selector lever from being moved out of position P without key turned and brake pedal depressed. SRS (Supplemental Restraint System) Seat belts, emergency tensioning device and airbags. Though independent systems, they are closely interfaced to provide effective occupant protection. 344