Mercedes-Benz CLK-Class Owner's Manual page 425

Technical terms
Emergency spare wheel
Narrow spare wheel which is lighter
and takes up less space than a full-
sized spare wheel.
EN 228
European standard for unleaded petrol.
Engine control system
Controls the various engine functions,
e.g. the engine speed.
Engine number
Number determined by the manufac-
turer and marked on the cylinder
crankcase, by which each engine can
be clearly identified.
Engine oil viscosity
Measure of the internal oil friction (vis-
cosity) at different temperatures. The
higher the temperature the oil can tol-
erate without thinning too much, or the
lower the temperature it can tolerate
without thickening too much, the bet-
ter the viscosity characteristics of the
oil.
422
ESP
(Electronic Stability Program)
Improves driving stability and ->trac-
tion when cornering and in emergency
situations, e.g. when there is a risk of
skidding.
GPS
(Global Positioning System)
System for determining geographical
location. A GPS unit located in the vehi-
cle receives satellite signals, compares
them to a digital map (e.g. on CD ROM)
and uses them to determine the posi-
tion of the vehicle and for navigation
purposes.
GSM
(Global System for Mobile Communica-
tions)
International communication standard
for mobile phones. Thanks to this uni-
form standard, you can also use your
mobile phone abroad. The transmis-
sion method is digital.
Head/thorax airbag
This type of airbag is located in the
backrests of the front seats and behind
the side panel in the rear of the vehicle
and protects the occupants in the
event of a side impact. It provides pro-
tection to the head area in addition to
that provided by the sidebag.
Headlamp range control
Adjusts the headlamps according to ve-
hicle load, so that oncoming traffic is
not dazzled.
Heater booster system
Provides additional heat in the vehicle
interior on vehicles with a diesel en-
gine.
Instrument cluster
Displays and indicator lamps in the
driver's field of vision, e.g. the rev
counter, the speedometer and the fuel
gauge.