clutch MERCEDES-BENZ S550 2007 W221 Owner's Manual

676 Technical termsPCMCIA
(P
ersonal C
omputer M
emory C
ard
I
nternational A
ssociation)
Portable memory cards designed to be
inserted into laptop computers to en-
able additional functions.
PIN code
(P
ersonal I
dentification N
umber 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 compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing:


Engine


Clutch/torque converter


Transmission


Transfer case


Drive shaft


Differential


Axle shafts/axles
PRE-SAFE
®
(Pre
ventive Occupant Safe
ty System)
Vehicles equipped with PRE-SAFE
®
take preventive measures when the
system senses certain driving dynam-
ics suggesting a possible accident.
Production options weight
(
page 527)Program mode selector switch
Used to switch the automatic transmis-
sion between standard operationS and
comfort operationC.
PSI
(P
ounds per s
quare i
nch)
(
page 527)
PUK
(Personal U
nblocking K
ey)
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 vehi-
cle interior for a short time after the en-
gine has been turned off.