
G
WARNING
When leaving the vehicle, alwaysr emove the
SmartKey from the ignitio nlock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secure dinachild
restraint system, and do not give them access to an unlocked vehicle. Achild's unsupervised
access to avehicl ecouldr esult in an accident
and/or serious personal injury .They could:
R injure themselves on vehicl eparts
R be seriouslyorf atally injured by extreme
heatorc old
R injure themselves or have an accident with
vehicl eequipment that may still be in oper-
ation even after the SmartKey has been
removed from the ignition, such as the seat
adjustment, steering whee ladjustment or
memory function.
If children open adoor, they coul dcause
severe or even fatal injury to other persons; if they get out of the vehicle, they coul dinjure
themselves when doing so or be seriouslyor
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, coul dbecome very
hot, and achild coul dbeburned on these
parts. G
WARNING
If you attach heavy or larg eobjects to the
SmartKey ,the SmartKey coul dbeuninten-
tionally turned in the ignitio nlock. This could
caus ethe engine to be switched off. There is a
risk of an accident.
Do not attach any heavy or larg eobjects to the
SmartKey .Remove any bulky key rings before
inserting the SmartKey into the ignitio nlock.
! Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function coul dbeaffected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations. 0043
0037 To lock the vehicle
0044 0054 To unlock the trunk lid
0087 0036 To unlock the vehicle
The turn signals flas honce when unlocking
and three times when locking.
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Y page158).
X To unlock centrally: press the0036but-
ton.
If you do not open the vehicl ewithinapprox-
imatel y40seconds of unlocking:
R the vehicl eislocked again.
R the anti-theft alarm system is armed again.
X To lockc entrally: press the 0037button. Changing the setting
softhe locking
system
You can change the setting of the locking
system in such awaythat only the driver's
door and the fuel filler flap are unlocked .This
is useful if you frequently travel on youro wn.
X To chang ethe setting: press and hold
downt he0036 and0037 buttons simulta-
neously for approximatel ysix seconds until
the battery check lamp (Y page65)
flashes twice . SmartKey
63Opening and closing Z

The SmartKey now functions as follows:
X To unlock the driver's door: press the
0036 button once.
X To unlock centrally: press the0036but-
ton twice.
X To lock centrally: press the0037button. Restoring the factor
ysettings
X Press the 0036and0037 button ssimulta-
neously for approximately six seconds until
the battery check lamp flashes twice. Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey, use the
mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered (Y page 58).
There are several ways to turn off the alarm:
X Press the 0036or0037 button on the
SmartKey.
or X Insert the SmartKey into the ignition lock.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch 0043in the direction of
the arrow and at the same time remove
mechanical key 0044from the SmartKey. SmartKey battery
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed ,itcan result in
severe health problems. There is arisk of fatal
injury.
Keep batteries out of the reach of children. If
ab attery is swallowed ,seek medical attention
immediately. H
Environmenta
lnote Batteries contain dangerous
substances
.Itisagainst the
law to dispose of them with
the household rubbish. They
must be collected separately and recycled to protec tthe
environment. Dispose of batteries in an
environmentally friendly
manner
.Take discharged
batteries to aqualified spe-
cialist workshop or aspecial
collection point for used bat- teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment.N ational
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm .
Mercedes-Benz recommends that you have
the batteries replaced at aqualified specialist
workshop. 64
SmartKeyOpening and closing

Doors
Important safet
ynotes G
WARNING
If children are lef tunsupervised in th evehicle,
they could:
R ope nthe doors ,thu se ndangerin gother
people or road users.
R get out and disrup ttraffic.
R operat ethe vehicle' sequipment.
Additionally, children could set th evehicle in
motion if, fo rexample, they:
R release th eparking brake.
R shiftin gthe automatic transmissio nout of
par kposition P
R Start th eengine.
There is ariskofana ccidentand injury.
Whe nleavin gthe vehicle, always take the
SmartKey wit hyou and loc kthe vehicle. Never
leav echildren or animals unattended in the
vehicle. Always keep th eSmartKey out of
reach of children. G
WARNING
Whe nleavin gthe vehicle, always remov ethe
SmartKey from th eignition lock. Always take
th eS martKey wit hyou and loc kthe vehicle.
Do no tleav echildren unsupervised in the
vehicle, eve niftheya re secure dinachild
restrain tsystem, and do no tgivet he ma ccess
to an unlocke dvehicle. Achild' su nsupervised
access to avehicle could result in an accident
and/o rserious personal injury. The ycould:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or hav eanacciden twith
vehicle equipmen ttha tm ay still be in oper-
ation eve nafter th eSmartKey has been
removed from th eignition ,suc hast heseat
adjustment, steerin gwhee ladjustmen tor
memor yfunction.
If children ope nadoor, they could cause
severe or eve nfatal injury to other persons; if they get out of th
evehicle, they could injure
themselves when doin gsoorbeseriously or
eve nfatally injured by any passin gtraffic.
Do no texposet he child restrain tsystem to
direc tsunlight. The child restrain tsystem's
metal parts ,for example, could becom every
hot ,and achild could be burne donthese
parts. G
WARNING
If objects ,luggage or load sare no tsecure dor
no tsecure dsufficiently, they could slip ,tip
over or be flun garound and thereby hit vehicle
occupants. There is ariskofi njury, particu-
larl yint he event of sudden braking or asud-
den chang eindirection.
Always stor eobjects so that they canno tbe
flun garound .Secureo bjects ,luggage or
load sagainst slippin gortippin gb efor ethe
journey. Unlockin
gand opening th edoors
from th eoutside
Coupe !
The doors swin
gupwards and out when
opened. Therefore, mak esuret hatthe re is
sufficien tclearanc eabov ethe vehicle. X
To ope nthe door: pointthe SmartKey
toward sdoorh andle 0043.
X Press the 0036buttonont heSmartKey.
Door handle 0043moves out.
X Lif tthe doo rbyd oorh andle 0043and swin git
up as far as it will go. 68
DoorsOpening an
dclosing

X
Turn the mechanical key counter-clockwise
to position 0049.
The door is locked.
X Turn the mechanical key back and remove
it.
X Check that both doors are locked.
i If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed.
Roadster X
Open the driver's door.
X Close the front-passenger door and the
trunk lid.
X Press the lockin gbutton (Y page 70).
X Check that the lockin gknobisint he lower
position on the front-passenger door. Press the lockin gknobd own by hand, if neces-
sary.
X Close the driver's door.
X Take the mechanical key out of the Smart-
Key (Y page 64).
X Insert the mechanical key into the lock of
the driver's door as far as it will go. X
Turn the mechanical key clockwise as far as
it will go to position 0047.
X Turn the mechanical key back and remove
it.
X Make sure that the doors and the trunk lid
are locked.
X Insert the mechanical key into the Smart-
Key. i
If you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-
theft alarm system is not armed. Trunk
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion .There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open. G
WARNING
When leaving the vehicle, alway sremove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unsupervised in the
vehicle, even if they are secured in achild
restraint system, and do not give them access to an unlocked vehicle. Achild's unsupervised
access to avehicle could result in an accident
and/or serious personal injury. They could:
R injure themselves on vehicle parts
R be seriously or fatally injured by extreme
heat or cold
R injure themselves or have an accident with
vehicle equipment that may still be in oper-
ation even after the SmartKey has been
removed from the ignition ,such as the seat
adjustment, steerin gwheel adjustmen tor
memory function.
If children open adoor, they could cause
severe or even fatal injury to other persons; if they get out of the vehicle, they could injure
themselves when doing so or be seriously or
even fatally injured by any passing traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very 72
TrunkOpening and closing

hot, and
achild could be burned on these
parts. G
WARNING
Do not carry heavy or hard objectsint he
passenger compartmentort runk unless they
are firmly secured in place.
Unsecured or improperly positioned cargo
increases achild's risk of injury in the event of
R strongb raking maneuvers
R sudden changes of direction
R an accident
! The temperature in the trunk may be high.
For this reason, do not store any tempera-
ture-sensitive objectsint he trunk.
! The trunk lid swings upwards when
opened. Therefore, make sure that there is sufficient clearance above the trunk lid.
Coupe:tof ully open the trunk lid, aminimum
height of 5.5 ft (1.68 m) from the ground is
necessary.
Roadster: to fully open the trunk lid, amini-
mum height of 5.7 ft (1.75 m) from the ground
is necessary.
The trunk lid can be:
R opened automatically from outside
R opened automatically from inside
R locked separately
R unlocked with the mechanical key
R opened with the emergency release button Opening/closing the trunk
Opening/closing from outside Opening
X Press the 0054button on the SmartKey.
The trunk lid opens slightly. X
Reach into the gap and pull up the trunk lid.
Closing X
Push the trunk lid down until it engages.
Use handle 0043to pull down the trunk lid if
necessary.
X If necessary, lock the vehicle with the 0037
button on the SmartKey.
Opening the trunk from inside the vehi- cle You can open the tailgate from the driver's
seat when the vehicle is stationary. Trunk
73Opening and closing Z

The trunk lid emergenc
yrelease does not
unlock the trunk lid if the battery is discon-
nected or discharged.
If the vehicle was locked centrally, opening
the trunk lid with the trunk lid emergency
release triggers the anti-theft alarm system. Side windows
Important safety notes
G
WARNING
While opening the side windows, body parts
could become trapped between the side win- dow and the door frame as the side window
moves. There is arisk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or pull the switch to close the side window again. G
WARNING
While closing the side windows, body parts in the closing area could become trapped. There is ar isk of injury.
When closing make sure that no parts of the
body are in the closing area. If somebody
becomes trapped, release the switch or press
the switch to open the side window again. G
WARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is arisk of injury.
When leaving the vehicle, alway stake the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The side windows are equipped with an auto-
matic reversin gfeature. If an object blocks or
restricts aside window during the closing
process, the side window opens again auto-
matically. G
WARNING
The reversin gfeature does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R over the last 4mmofthe closing movement
R during resetting
R when closing the side window again man-
ually immediately after automatic reversing
This means that the reversin gfeature cannot
prevent someone being trapped in these sit-
uations. There is arisk of injury.
Make sure that no body parts are in close
proximit yduring the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
Observe the importan tsafety notes in the
"Children in the vehicle" section (Y page 51). Opening and closing the side win-
dows
0043
Left side window
0044 Right side window
The switches for both side windows are
located on the driver's door. There is also a
switch for the front-passenger side window
on the front-passenger door.
The switches on the driver's door take prec-
edence. Side windows
75Opening and closing Z

Seats
Important safety notes
G
WARNING
Children could become trapped if they adjust the seats, particularly when unattended.
There is arisk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle. G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint ,steer-
ing wheel and mirror and fasten your seat belt before startingt he engine. G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is a
risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under the
lever assembly of the seat adjustment sys-
tem. G
WARNING
When you adjust aseat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is arisk of injury.
Make sure when adjusting aseat that no one
has any body parts in the sweep of the seat. G
WARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak- ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal
injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder. G
WARNING
If head restraint sare not installed and
adjusted correctly, they cannot provide pro-
tection as intended. There is an increased risk
of injury in the head and neck area, e.g. in the event of an accident or when braking.
Always drive with the head restraint sinstal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head
restraint supports the back of the head at
about eye level. G
WARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquidiss pilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat Seats
85Seats, steering wheela nd mirrors Z

AIRSCARF (Roadster)
G
WARNING
When AIRSCARF is switched on ,veryh ot air
can flo wfromt hevents in th ehead restraints.
This could result in burn sintheimmediate
vicinity of th eair vents .There is ariskofi njury.
Reduc ethe heater output before it becomes
to oh ot.
The AIRSCARF function warm sthe head and
neck area of vehicl eoccupant swithw arm air.
The warm air flows out of th ehole sint hehead
restraints.
The three red indicator lamp sinthebutton
indicat ethe heating level you hav eselected. X
Mak esuret hatthe SmartKey is in position
2 in th eignition lock.
X To switch on: press button0043.
Three red indicator lamp sinthebutto nlight
up. The blowe rstartsupa fterapreheating
phas eofs even seconds.
X Press button 0043repeatedly until the
desired heating level is set.
X To switch off: press button0043repeatedly
until all th eindicator lamp sgoout.
You can use th eadjustable fin sonthehead
restrain ttoadjust th eheight of th ecurren tof
air blown out according to your height.
Mak esuret hatthe re are no objects covering
th ei ntake grille on th ebackoft hedriver's
seat backrest. i
The blowe
rcontinue srunnin gfor seven
seconds to cool down th eheating ele-
ments.
i If th
ebattery voltag eistoolow, AIRSCARF
may switch off. Steering wheel
Important safety notes
G
WARNING
You could lose control of your vehicl eifyou do
th ef ollowin gwhile driving:
R adjust th edriver's seat ,head restraint,
steering whee lormirrors
R faste nthe seat belt
There is ariskofana ccident.
Adjus tthe driver's seat ,head restraint, steer-
ing whee land mirror and faste nyour seat belt
before starting th eengine. G
WARNING
Children could injure themselves if they
adjust th esteering wheel. There is ariskof
injury.
When leaving th evehicle, always tak ethe
SmartKey wit hyou and loc kthe vehicle. Never
leav echildren unsupervised in th evehicle. G
WARNING
If th esteering whee lisunlocke dwhile the
vehicl eisinm otion,itcould chang eposition
unexpectedly. This could caus eyou to lose
control of th evehicle. There is ariskofan
accident.
Befor estarting off ,makes uret he steering
whee lislocked. Never unloc kthe steering
whee lwhile th evehicl eisinm otion. 88
Steering wheelSeats
,steering wheel and mirrors