Mercedes-Benz SLK 350 Operator's Manual page 436

Technical terms
Roll bar
Occupant protection system which
consists of tubular steel sheathed in
plastic.
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.
436
Shift lock
When the vehicle with automatic trans-
mission is parked, this lock prevents
the gear selector lever from being inad-
vertently moved out of position P with-
out the SmartKey turned and the brake
pedal depressed.
Sidewall
( page 324)
Speedshift
Steering wheel gearshift control for ve-
hicles with automatic transmission.
You can change the gears yourself with
the steering wheel gearshift buttons.
SRS
(Supplemental Restraint System)
Seat belts, emergency tensioning
device and air bags. Though indepen-
dent systems, they are closely inter-
faced to provide effective occupant
protection.
Tele Aid system
(Telematic Alarm Identification on
Demand)
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.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.