54 Safety and SecurityOccupant safety
Occupants, especially children, should
never lean their heads in the area of the
door where the head-thorax airbag in-
flates. This could result in serious inju-
ries or death should the airbag be
triggered. Always sit upright, properly
use the seat belts and appropriate size
infant or child restraint system.
Children 12 years old and under must
never ride in this vehicle, except in a
Mercedes-Benz authorized
BabySmart
TM compatible child seat,
which operates with the BabySmart
TM
system installed in the vehicle to deacti-
vate the passenger side front airbag
when it is properly installed. Otherwise
they will be struck by the airbag when it
inflates in a crash. If this happens, seri-
ous or fatal injury will result.
Failure to follow these instructions can re-
sult in severe injuries to you or other occu-
pants.
If you sell your vehicle you are responsible
to make the buyer aware of these points. Be
sure to give the buyer this Operator’s Manu-
al.
Warning!
G
Should you choose to place a child 12 years
old or under in the passenger seat of your
vehicle, you must properly use a
BabySmart
TM child restraint which will turn
off the passenger side front airbag
(
page 62). BabySmart
TM will not, howev-
er, turn off any side impact airbag.
It should be noted, however, that there is a
possibility for a head-thorax airbag related
injury if occupants, especially children, are
not properly seated or restrained when next
to a head-thorax airbag which needs to de-
ploy rapidly in a side impact in order to do its
job.
To help avoid the possibility of injury, please
follow these guidelines:
(1) Occupants, especially children, should
never place their bodies or lean their
heads in the area of the door where the
head-thorax airbag inflates. This could
result in serious injuries or death should
the head-thorax airbag be activated.
(2) Always sit upright, properly use the seat
belts and use an appropriately sized in-
fant or child restraint system for all chil-
dren 12 years old or under.
(3) Always wear seat belts properly.
If you believe that, even with the use of
these guidelines, it would be safer for your
passenger seat occupants to have the pas-
senger side head-thorax airbag deactivated,
then deactivation can be accomplished
upon your written election to do so at your
authorized Mercedes-Benz Center at an ad-
ditional cost. Please contact your local au-
thorized Mercedes-Benz Center or call our
Customer Assistance Center at
1-800-FOR-MERCedes (1-800-367-6372)
for details.
68 Safety and SecurityDriving safety systems
Driving safety systemsIn this section you will find information on
the following driving safety systems:
ABS (A
ntilock B
rake S
ystem)
BAS (B
rake A
ssist S
ystem)
ESP (E
lectronic S
tability P
rogram)
SBC brake system (S
ensotronic B
rake
C
ontrol)
ABS
The ABS regulates the brake pressure so
that the wheels do not lock during braking.
This allows you to maintain the ability to
steer your vehicle.
The ABS is functional above a speed of ap-
proximately 5 mph (8 km/h) independent
of road surface conditions.
On slippery road surfaces, the ABS will re-
spond even with light brake pressure.
If the ABS activates during braking, the
ABS/ESP warning lamp
v
in the speed-
ometer dial flashes. Because of the SBC
brake system, you will not feel any pulsa-
tion in the brake pedal.
iIn winter operation, the maximum ef-
fectiveness of the ABS, the BAS, the
ESP, and SBC is only achieved with win-
ter tires (M + S tires), or snow chains as
required.
Warning!
G
The following factors increase the risk of ac-
cidents:
excessive speed, especially in turns
wet and slippery road surfaces
following another vehicle too closely
ABS, BAS, ESP and SBC cannot reduce this
risk.
Always adjust your driving style to the pre-
vailing road and weather conditions.
Warning!
G
Do not pump the brake pedal, rather use
firm, steady brake pedal pressure. Pumping
the brake pedal defeats the purpose for ABS
and significantly reduces braking effective-
ness.
70 Safety and SecurityDriving safety systems
ESP
The Electronic Stability Program (ESP)
monitors the vehicle's traction (force of
adhesive friction between the tires and the
road surface) and handling.
The ESP recognizes when a wheel is spin-
ning or if the vehicle starts to skid. By ap-
plying brakes to the appropriate wheel and
by limiting engine output, the ESP works to
stabilize the vehicle. The ESP is especially
useful while driving off and on wet or slip-
pery road surfaces.
The ABS/ESP warning lamp
v
in the
speedometer dial flashes when the ESP is
engaged.
The warning lamp
v
in the speedome-
ter dial (
page 21) lights up when you
turn the key to position1 or2. It goes out
when you start the engine
Warning!
G
BAS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking efficiency beyond that af-
forded by the condition of the vehicle brakes
and tires or the traction. The BAS cannot
prevent accidents, including those resulting
from excessive speed in turns, following an-
other vehicle too closely, or hydroplaning.
Only a safe, attentive, and skillful driver can
prevent accidents. The capabilities of a BAS
equipped vehicle must never be exploited in
a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others.
Warning!
G
Never switch off the ESP when you see the
ABS/ESP-warning lamp
v
flashing in
the speedometer dial. In this case proceed
as follows:
While driving off, apply as little throttle
as possible.
While driving, ease up on the accelera-
tor.
Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP cannot prevent accidents resulting
from excessive speed.
71 Safety and Security
Driving safety systems
Switching off ESP
To improve the vehicle's traction, turn off
the ESP in driving situations where it would
be advantageous to have drive wheels spin
and thus cut into surfaces for better grip
such as:
starting out on slippery surfaces and in
deep snow in conjunction with snow
chains
in sand or gravel
Warning!
G
The ESP cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The ESP
cannot prevent accidents, including those
resulting from excessive speed in turns, or
hydroplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The ca-
pabilities of an ESP equipped vehicle must
never be exploited in a reckless or danger-
ous manner which could jeopardize the us-
er’s safety or the safety of others.
!Because of ESP’s automatic operation,
the engine must be shut off when
the parking brake is being tested on
a brake test dynamometer.
the vehicle is being towed with the
front axle raised.
Active braking action through the ESP
may otherwise seriously damage the
rear axle brake system.
ESP will only function properly if you
use wheels of the recommended tire
size (page 337).
Warning!
G
ESP should not be switched off during nor-
mal driving other than in the circumstances
described below. Disabling of the system
will reduce vehicle stability in standard driv-
ing maneuvers.iDistronic* cannot be activated when
ESP has been deactivated.
72 Safety and SecurityDriving safety systemsThe button is located in the lower part of
the center console.
1ESP on/off
Press ESP button1 until the ESP warn-
ing lamp
v
in the speedometer
lights up.
ESP is deactivated.
If one or more wheels are spinning, the
ESP warning lamp v
in the speedome-
ter flashes, regardless of the speed.
Traction control brakes a spinning wheel
even when ESP is deactivated.
ESP always operates when you are brak-
ing, even when it has been deactivated.Switching on ESP
Press button1.
The ESP warning lamp
v
in the
speedometer goes out. You are now
again in normal driving mode.
SBC brake system
The SBC brake system combines a hydrau-
lic brake circuit with electronically con-
trolled brake servo assistance. You have
increased braking safety and improved
braking comfort.
!Avoid spinning of a drive wheel for an
extended period with the ESP switched
off. This may cause serious damage to
the drive train which is not covered by
the Mercedes-Benz Limited Warranty.Warning!
G
When the ESP warning lamp
v
is
illuminated continuously, ESP is switched
off.
Adapt your speed and driving to the prevail-
ing road conditions and to the non-operating
status of the ESP.
Warning!
G
Never ignore a brake malfunction indicated
in the speedometer display, for example by
the
;
(USA only) or
3
(Canada only)
indicator lamp. Refer to the “Practical hints”
section (
page 253). Also read and ob-
serve the messages in the instrument clus-
ter display (page 257).
76 Safety and SecurityAnti-theft systemsArming the alarm system
The alarm system is armed after locking
the vehicle with the remote control. The
turn signal lamps blink three times to indi-
cate that the alarm system is activated.
The
‹
indicator lamp in the central
locking switch (
page 23) will blink after
approximately 10 seconds when the alarm
system is completely armed.Disarming the alarm system
The alarm system is disarmed when you
unlock your vehicle with the remote con-
trol. The turn signal lamps blink once to in-
dicate that the alarm system is
deactivated.
Canceling the alarm
To cancel the alarm:
With the key
Insert the key in the starter switch.
or
Press the
Œ
or
‹
button.
The alarm is canceled.With KEYLESS-GO*
Grasp the outside door handle.
or
Press the KEYLESS-GO start/stop but-
ton.
The alarm is canceled.
iIf the turn signal lamps do not blink
three times, a door or the hood may not
be closed properly.
Close the respective element and lock
the vehicle again.
iThe alarm system will rearm automati-
cally again after aprroximately 40 sec-
onds if no door was opened.
80 Controls in detailLocking and unlockingIn the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. if you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlockingKeys
Your vehicle comes supplied with two
SmartKeys with remote controls and a re-
movable mechanical key. The locking tabs
for the mechanical key portion of the two
keys are a different color to help distin-
guish each key unit.
The remote control key provides an ex-
tended operating range. To prevent theft,
however, it is advisable to only unlock the
vehicle when you are in close proximity to
it.
The key centrally locks and unlocks:
the doors
the trunk lid
the glove box
the storage space under the armrest
the storage compartment in the rear
the fuel filler flap
SmartKey with remote controls1‹
Lock button
2
Š
Unlock button for the trunk lid
3Mechanical key locking tab
4
Œ
Unlock button
5Battery check lamp
6
Â
Panic button (
page 67)
iYou can also open and close the re-
tractable hardtop using the key
(page 163).
91 Controls in detail
Locking and unlocking
Closing the trunk lid
1Handle
Lower trunk lid by pulling firmly on
handle1.
Automatic central locking
The doors and the trunk lid automatically
lock when the vehicle is set into motion.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.
You can deactivate the automatic locking
using the control system (
page 128).
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk lid. Be espe-
cially careful when small children are
around.
iTo prevent an inadvertent lockout, do
not place the key in the trunk.
Vehicles with KEYLESS-GO*: To pre-
vent a possible inadvertent lockout, the
trunk lid will open automatically if a
KEYLESS-GO card is recognized inside
the trunk.
When the hardtop is retracted, it must
be completely lowered in the trunk be-
fore the trunk lid can be closed
(page 199).
Warning!
G
Only drive with the trunk closed as, among
other dangers such as visibility blockage,
exhaust fumes may enter the vehicle interi-
or.
iThe doors unlock automatically after an
accident if the force of the impact ex-
ceeds a preset threshold.
The vehicle automatically locks when
the ignition is switched on and the
wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or
more. You could therefore lock yourself
out when the vehicle
is pushed
is on a test stand