252 OperationEngine compartment
Engine compartmentHood
Opening
1Hood release
Pull lever1 downwards.
The hood is unlocked and handle2 
will extend out of the radiator grille. 2Handle for opening the hood
Pull handle2 to its stop out of 
radiator grille.
Pull up on the hood (do not pull up on 
the handle) and then release it.
The hood will be automatically held 
open at shoulder height by gas-filled 
struts. 
Warning!
G
Do not pull the release lever while the 
vehicle is in motion. Otherwise the hood 
could be forced open by passing air flow.
!To avoid damage to the windshield 
wipers or hood, never open the hood if 
the wiper arms are folded forward away 
from the windshield.
Warning!
G
To help prevent personal injury, stay clear of 
moving parts when the hood is open and the 
engine is running. Make sure the hood is 
properly closed before driving. When closing 
the hood, use extreme caution not to catch 
hands or fingers.
The radiator fan may continue to run for 
approximately 30 seconds or even restart 
after the engine has been turned off. Stay 
clear of fan blades.Warning!
G
If you see flames or smoke coming from the 
engine compartment, or if the coolant tem-
perature gauge indicates that the engine is 
overheated, do not open the hood. Move 
away from vehicle and do not open the hood 
until the engine has cooled. If necessary, 
call the fire department. 
363 Technical terms
Instrument cluster
The displays and indicator/warning 
lamps in the driver’s field of vision, 
including the tachometer, speedo-
meter, engine temperature display and 
fuel gauge.
Kickdown
Depressing the accelerator past the 
point of resistance shifts the transmis-
sion down to the lowest possible gear. 
This very quickly accelerates the 
vehicle and should not be used for 
normal acceleration needs.
Lock button
Button on the door which indicates 
whether the door is locked or 
unlocked. Pushing the lock button 
down on an individual door from inside 
will lock that door.
Memory function*
Used to store three individual seat, 
steering wheel and mirror positions for 
each SmartKey.Menu
The control system displays are 
arranged in menus. Each menu 
contains a number of commands for 
particular systems. In the Audio menu, 
for example, you will find the 
commands 
SELECT RADIO STATION
 or
 
OPERATE CD PLAYER
. Using commands, 
you can directly change the settings for 
your vehicle.
MON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline 
as determined by a standardized 
method. It is an indication of a 
gasoline's ability to resist undesired 
detonation (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.Multifunction display
Display field in the instrument cluster 
used to present information provided 
by the control system.
Multifunction steering wheel
Steering wheel with buttons for 
operating the control system.
Overspeed range
Engine speeds within the red marking 
of the tachometer dial. Avoid this 
engine speed range, as it may result in 
serious engine damage that is not 
covered by the Mercedes-Benz Limited 
Warranty.
Poly-V-belt drive
Drives engine-components (alternator, 
AC compressor, etc.) from the engine.