77 Safety and Security
Occupant safety
Warning!G
USE SEAT BELTS PROPERLY
Seat belts can only work when used
properly. Never wear seat belts in any
other way than as described in this
section, as that could result in serious
injuries in case of an accident.
Each occupant should wear their seat
belt at all times, because seat belts help
reduce the likelihood of and potential
severity of injuries in accidents, includ-
ing rollovers. The integrated restraint
system includes SRS (driver air bag,
front passenger front air bag, head-tho-
rax air bags and rear side impact air
bags*), ETD (seat belt emergency ten-
sioning device), and front seat knee bol-
sters. The system is designed to
enhance the protection offered to prop-
erly belted occupants in certain frontal
(front air bags and ETD) and side
(head-thorax air bags and rear side im-
pact air bags* and ETD) impacts which
exceed preset deployment thresholds.
Never wear the shoulder belt under your
arm, against your neck or off your shoul-
der. In a frontal crash, your body would
move too far forward. That would
increase the chance of head and neck
injuries. The belt would also apply too
much force to the ribs or abdomen,
which could severely injure internal or-
gans such as your liver or spleen.
Never wear belts over rigid or breakable
objects in or on your clothing, such as
eyeglasses, pens, keys etc., as these
might cause injuries.
Position the lap belt as low as possible
on your hips and not across the abdo-
men. If the belt is positioned across your
abdomen, it could cause serious injuries
in a crash.
Never use a seat belt for more than one
person at a time. Do not fasten a seat
belt around a person and another
person or other objects.
Belts should not be worn twisted. In a
crash, you wouldn’t have the full width
of the belt to distribute impact forces.
The twisted belt against your body could
cause injuries.
Pregnant women should also always use
a lap-shoulder belt. The lap belt portion
should be positioned as low as possible
on the hips to avoid any possible
pressure on the abdomen.
Never place your feet on the instrument
panel, dashboard, or on the seat. Always
keep both feet on the floor in front of the
seat.
When using a seat belt to secure infant
or toddler restraints or children in
booster seats, always follow the child
seat manufacturer’s instructions.
80 Safety and Security
Occupant safety
Active head restraints
The active front seat head restraints are in-
tended to offer the driver and front passen-
ger increased protection from whiplash
type injuries in rear-end collisions. In the
event of a rear-end collision exceeding the
systems’ deployment threshold, the active
head restraints on the driver’s and front
passenger’s seats are designed to move
forward in the direction of travel, providing
the head with increased support earlier on
in the collision sequence. The active head
restraints activate whether the seat is oc-
cupied or not.You cannot remove the active head re-
straint on the driver’s and front passen-
ger’s seat.
For removal of the active head restraints
we recommend that you contact an
authorized Mercedes-Benz Center.
For information on head restraint adjust-
ment, see “Seats” (
page 39).
For information on resetting the activated
active head restraints, see “Resetting acti-
vated head restraints” (
page 424).
Warning!G
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as
close to the head as possible and the center
of the head restraint supports the back of
the head at eye level. This will reduce the
potential for injury to the head and neck in
the event of an accident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an
accident.
Warning!G
Only use seat or head restraint covers which
have been tested and approved by
Mercedes-Benz for your vehicle model.
Using other seat or head restraint covers
may interfere with or prevent the activation
of the active head restraints. Contact an
authorized Mercedes-Benz Center for
availability.
Do not attach any objects (e.g. hangers) to
the head restraint posts. Otherwise, the ac-
tive head restraints may not be able to func-
tion properly or offer the intended degree of
protection in the event of an accident.
117 Controls in detail
Locking and unlocking
Valet locking
The lock is located next to the handle
above the rear license plate recess.
1Neutral position
2Locked
Close the trunk (page 110).
Pull the mechanical key out of the
SmartKey (
page 410).
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key clockwise to
position2 and remove the mechani-
cal key in that position to lock the
trunk.
The trunk remains locked even when the
vehicle is centrally unlocked.
Insert the mechanical key in the trunk
lid lock.
Turn the mechanical key counterclock-
wise to neutral position1 and remove
the mechanical key in that position to
unlock the trunk.
You can now open the trunk
(
page 109).
Automatic central locking
The doors and the trunk automatically lock
when the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or more.
You can open a locked door from the
inside. Open door only when conditions
are safe to do so.
You can deactivate the automatic locking
mode using the control system, see “Set-
ting automatic locking” (
page 164).
iTo deny any unauthorized person access to
the trunk, e.g. when you valet park the vehicle,
lock it separately with the mechanical key. Leave
only the SmartKey or SmartKey with
KEYLESS-GO* less its mechanical key with the
vehicle.
iYou can only cancel the separate trunk lock-
ing mode by means of the mechanical key.iThe doors unlock automatically after an ac-
cident if the force of the impact exceeds a preset
threshold.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking when
the vehicle
is pushed or towed
is on a test stand
132 Controls in detail
Lighting
Switching off corner-illuminating front
fog lamps
The combination switch for the turn signal
resets automatically after major steering
wheel movements. This will switch off the
corner-illuminating front fog lamps if they
where activated by switching on the left or
right turn signal.
If the turn signal should stay on after mak-
ing the turn, the turn signal and corner-illu-
minating front fog lamps can be switched
off by returning the combination switch to
its original position.Driving in reverse
Switching on corner-illuminating front
fog lamps
Place the gear selector lever in
positionR.
The corner-illuminating front fog lamp
opposite to your steering direction
comes on.
Switching off corner-illuminating front
fog lamps
Place the gear selector lever out of
positionR.
The respective front fog lamp goes out.
iIf you have switched on the turn signal for
one side but turn the steering wheel in the
opposite direction, the corner-illuminating front
fog lamp comes on for the side indicated by the
turn signal.
The corner-illuminating front fog lamp remains lit
for a maximum of three minutes. Afterward, it
goes out even if the turn signal is still switched
on.
iThe corner-illuminating front fog lamps tem-
porarily come on, on both sides of the vehicle if
you turn the steering wheel in one direction and
then again in the other direction shortly
thereafter.
iThe corner-illuminating front fog lamps will
come on automatically depending on the
steering angle, even if you did not switch on
either turn signal.
If the corner-illuminating front fog lamps came
on automatically, they will also go out
automatically depending on the steering angle.iThere may be a brief delay before the
corner-illuminating front fog lamps switch off.
136 Controls in detail
Instrument cluster
For a full view illustration of the instrument
cluster, see “Instrument cluster”
(
page 26).
1Reset button
The instrument cluster is activated when
you
open a door
switch on the ignition (page 38)
press reset button1
switch on the exterior lamps
You can change the instrument cluster
settings in the Instrument cluster submenu
of the control system (
page 156).Adjusting instrument cluster
illumination
Use the reset button1 to adjust the
illumination brightness for the instrument
cluster.
To brighten illumination
Turn reset button1 clockwise.
The instrument cluster illumination will
brighten.
To dim illumination
Turn reset button1 counterclock-
wise.
The instrument cluster illumination will
dim.
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, please do so
with added caution. Visit an authorized
Mercedes-Benz Center as soon as possible.
iThe instrument cluster illumination is
dimmed or brightened automatically to suit am-
bient light conditions.
The instrument cluster illumination will also be
adjusted automatically when you switch on the
vehicle’s exterior lamps.
137 Controls in detail
Instrument cluster
Coolant temperature indicator
The coolant temperature indicator is on
the right side in the instrument cluster
(
page 26).
Resetting trip odometer
Make sure you are viewing the stan-
dard display in the multifunction dis-
play (
page 145).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel repeatedly until the standard dis-
play appears (
page 140).
Press and hold the reset button on the
instrument cluster (
page 136) until
the trip odometer is reset.
Warning!G
Driving when your engine is overheated
can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously
burned.
Steam from an overheated engine can
cause serious burns which can occur
just by opening the hood. Stay away
from the engine if you see or hear steam
coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of
the vehicle and do not stand near the vehicle
until the engine has cooled down.
!Excessive coolant temperature triggers a
warning in the multifunction display
(
page 391) and the red coolant warning lamp
in the instrument cluster comes on
(
page 371).
The engine should not be operated with the cool-
ant temperature above 248°F (120°C). Doing so
may cause serious engine damage which is not
covered by the Mercedes-Benz Limited
Warranty.
iDuring severe operating conditions, e.g.
stop-and-go traffic, the coolant temperature may
rise close to 248°F (120°C).
144 Controls in detail
Control system
Menu5Menu6Menu7Menu8
Commands/submenus
Vehicle status message
memory1
1The vehicle status message memory menu is only displayed if there is a message stored.
SettingsTrip computerTEL*
(page 152)(page 153)(page 165)(page 167)
Calling up vehicle malfunction,
warning and system status
messages stored in memoryReset to factory settingsFuel consumption statistics
after startLoad phone book
Instrument cluster submenuFuel consumption statistics
since the last resetSearch for name in phone book
Time/Date submenuCall up range
Lighting submenu
Vehicle submenu
Convenience submenu
iThe headings used in the menus table are
designed to facilitate navigation within the sys-
tem and are not necessarily identical to those
shown in the control system displays.
The first function displayed in each menu will au-
tomatically show you which part of the system
you are in.
148 Controls in detail
Control system
1Gear indicator
2RACETIMER
3Best lap time
4Lap number
Resetting current lap
Press buttonæ while the timer is
running.
The timer stops.
Press buttonç.
The lap time is reset to “0”.Deleting all laps
Press buttonæ while the timer is
running.
The timer stops.
Press the reset button twice
(
page 136).
Press buttonæ.
The timer starts. The saved laps are
deleted.Overall analysis
Press buttonè orÿ repeatedly
until the AMG menu appears in the
multifunction display.
Press buttonj repeatedly until you
see the overall analysis.
1Overall analysis of RACETIMER
2Overall driving time
3Maximum speed
4Overall distance driven
5Average speed
iIt is not possible to delete a single saved lap.
iWhen you turn off the engine, the
RACETIMER will be reset to “0” after 30 sec-
onds. All laps are deleted.
iThese functions are only available if you
have saved at least one lap and have stopped the
RACETIMER.