Mercedes-Benz 2005 E 320 CDI User Manual
Page 477
475
Technical terms
PTC heating element
(Positive Temperature Coefficient)
Electronic component that warms up
quickly as electricity is supplied to it
and is used as a ->heater booster sys-
tem in diesel vehicles.
Restraint systems
Seat belts, belt tensioners, air bags and
child restraint systems. As indepen-
dent systems, their protective func-
tions complement one another.
RON
(Research Octane Number)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (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.
SBC
(Sensotronic Brake Control)
Electronically controlled hydraulic
braking system for increased braking
safety and comfort.
Shift lock
When the vehicle is parked, this lock
prevents the transmission selector le-
ver from being moved out of position P
without the ignition or engine on and
brake pedal depressed.
SRS
(Supplemental Restraint System)
Seat belts, emergency tensioning de-
vice and air bags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Tele Aid System
(Telematic Alarm Identification on De-
mand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.
The Tele Aid system is operational pro-
vided that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Telematics*
A combination of the terms “telecom-
munications” and “informatics”.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.