2007 Mercedes S-Class Owner's Manual - Page 677

Technical terms PCMCIA (Personal Computer Memory Card International Association) Portable memory cards designed to be inserted into laptop computers to enable additional functions. PIN code (Personal Identification Number code) Your PIN code prevents unauthorized persons from using your ->GSM mobile phone. The PIN code is a number string, which you have to enter when switching on the telephone. 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 Differential Axle shafts/axles PRE-SAFE® (Preventive Occupant Safety System) Vehicles equipped with PRE-SAFE® take preventive measures when the system senses certain driving dynamics suggesting a possible accident. Production options weight ( page 527) Program mode selector switch Used to switch the automatic transmission between standard operation S and comfort operation C. PSI (Pounds per square inch) ( page 527) PUK (Personal Unblocking Key) Must be entered if the wrong ->PIN was entered three consecutive times. Recommended tire inflation pressure ( page 527) REST (Residual engine heat utilization) Feature that uses the engine heat stored in the coolant to heat the vehicle interior for a short time after the engine has been turned off. 676