2007 Mercedes S-Class Owner's Manual - Page 678

Technical terms Restraint systems Seat belts, belt tensioners, air bags and child restraint systems. As independent systems, their protective functions complement one another. Rim ( page 527) Root directory The uppermost directory on a storage medium. Run Flat Indicator The Run Flat Indicator monitors the set tire inflation pressures by evaluating each wheel's rotational speed. If a wheel's rotational speed changes due to falling tire inflation pressure, a corresponding warning message appears in the ->Instrument cluster control system. 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. Sidewall ( page 527) SIM (Subscriber Identity Module) Card provided by the ->GSM telephone service provider. Necessary for accessing a mobile communication network. SMS (Short Message Service) With this function you can receive, read and delete short text messages (if SMS service is provided by your carrier). 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 (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 mobile phone and ->GPS coverage is available. Telematics A combination of the terms "telecommunications" and "informatics." 677