2005 Mercedes SLK-Class Owner's Manual - Page 436

Technical terms Roll bar Occupant protection system which consists of tubular steel sheathed in plastic. 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 with automatic transmission is parked, this lock prevents the gear selector lever from being inadvertently moved out of position P without the SmartKey turned and the brake pedal depressed. Sidewall ( page 324) Speedshift Steering wheel gearshift control for vehicles with automatic transmission. You can change the gears yourself with the steering wheel gearshift buttons. SRS (Supplemental Restraint System) Seat belts, emergency tensioning device and air bags. Though independent systems, they are closely interfaced to provide effective occupant protection. Tele Aid system (Telematic Alarm Identification on Demand) The Tele Aid system consists of three types of response: automatic and manual emergency, Roadside Assistance and information. Tele Aid is initially activated by completing a subscriber agreement and placing an acquaintance call. The Tele Aid system is operational provided that the vehicle's battery is charged, properly connected, not damaged and cellular and GPS coverage is available. Tightening torque Force times lever arm (e.g. a lug wrench) with which threaded fasteners such as wheel bolts are tightened. 436