ProblemPossible causes/consequences andMSolutions
The engine cannot be
started using the Smart-
Key.the on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 254).
or
XJump-start the vehicle (Ypage 254).
or
XConsult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 69) and replace it if necessary
(Ypage 69).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
When a door is opened, the side window on that
side opens slightly. When the door is closed, the side window closes again.
Doors71
Opening and closing
Z
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 291).
If the rear spoiler has been extended manually,
the height when opened is higher by this
amount. If in doubt, retract the rear spoiler again
manually before opening the trunk lid
(
Ypage 228).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
You should preferably place luggage or loads in
the trunk. Observe the loading guidelines
(
Ypage 217).
Opening/closing from outside
Opening
XPress the Fbutton on the SmartKey.
The trunk lid opens slightly.
XLift the trunk lid.
Closing
XPull the trunk lid down using recess :and let
it drop into the lock.
XLock the vehicle if necessary with the &
button on the SmartKey or with KEYLESS-GO
(
Ypage 67).
Unlocking with KEYLESS-GO
Important safety notes
GWARNING
The vehicle exhaust system can become very
hot. If you use HANDS-FREE ACCESS, you
could burn yourself by touching the exhaust
system. There is a risk of injury. Always
ensure that you make the kicking movement
only within the detection range of the sensors.
!If the SmartKey is within the rear detection
range of KEYLESS-GO, the following situa-
tions, for example, could lead to the uninten-
tional opening of the trunk lid:
Rwhen using an automatic car wash
Rwhen using a power washer
Make sure that the SmartKey is at least 10 ft
(3 m) away from the vehicle.
General notes
Vehicles with KEYLESS-GO without carbon
package: you can unlock the trunk lid without
using your hands. This is useful if you have your
hands full. To do this, make a kicking movement
under the rear bumper with your foot.
74Trunk
Opening and closing
Observe the following points:
RCarry your KEYLESS-GO key about your per-
son. The SmartKey must be at the rear of the
vehicle in the detection range of KEYLESS-
GO.
RWhen making the kicking movement, make
sure that you are standing firmly on the
ground and that there is sufficient clearance
to the rear of the vehicle. You could otherwise
lose your balance, for example on ice.
RAlways ensure that you only make the kicking
movement within the detection range of sen-
sors:.
RStand at least 12 in (30 cm) away from the
rear area while doing so.
RDo not come into contact with the bumper
while making the kicking movement. Other-
wise, the sensors may not function correctly.
RUnlocking the trunk via the sensor does not
function while the engine is being started.
RDirt caused by road salt or snow around sen-
sors :may restrict functionality.
Using the trunk unlocking function via the
sensor with a prosthetic leg may restrict func- tionality.
RIf a KEYLESS-GO SmartKey is within the rear
detection range of KEYLESS-GO, the sensors
could be triggered. As a result, the trunk lid
could be opened unintentionally under the
following conditions:
-if you set something down or lift something
behind the vehicle
-if you polish the rear of the vehicle
Do not carry the KEYLESS-GO key about your
person in these situations or in situations sim-
ilar to these. This will prevent the trunk lid
from being unlocked unintentionally.
Operation
XTo unlock: kick into sensor detection
range :below the bumper with your foot.
The trunk lid opens slightly.
XTo open: lift the trunk lid.
XIf the trunk lid does not unlock after sev-
eral attempts: wait at least ten seconds then
kick under the bumper once again.
If you hold your foot under the bumper for too
long, the trunk lid does not unlock. Repeat the
leg movement more quickly if this occurs.
Unlocking from inside the vehicle
GWARNING
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.
Trunk75
Opening and closing
Z
You can unlock the trunk lid from the driver's
seat when the vehicle is stationary and
unlocked.
XPress remote operating switch:for the
trunk lid until the trunk lid is unlocked.
The trunk lid opens slightly.
Locking the trunk lid separately
The "Locking the trunk lid separately" function is
only available in certain countries.
You can lock the trunk lid separately. If you then
unlock the vehicle centrally, the trunk lid
remains locked and cannot be opened.
XTo activate: close the trunk lid.
XOpen the glove box.
XSlide the switch to position 1.
If the vehicle is unlocked centrally, the trunk
lid remains locked.
iYou can also lock the glove box
(Ypage 218).
XTo deactivate: open the glove box.
XSlide the switch to position 2.
If the vehicle is unlocked centrally, the trunk
lid will also be unlocked.
Trunk emergency release
You can unlock the trunk lid from the inside with
emergency release button :.
XPress emergency release button :briefly.
The trunk lid unlocks and opens.
XPush the trunk lid upwards to open it com-
pletely.
The trunk lid can be unlocked with emergency
release button :when the vehicle is stationary
or in motion.
Emergency release button ::
Rflashes for 30 minutes after the trunk lid is
opened
Rflashes for 60 minutes after the trunk lid is
closed
Emergency release button :does not unlock
the trunk lid if the battery is disconnected or
discharged.
If the vehicle was locked centrally, opening the
trunk lid with emergency release button :trig-
gers the anti-theft alarm system.
Side windows
Important safety notes
GWARNING
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 a risk 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.
76Side windows
Opening and closing
GWARNING
While closing the side windows, body parts in
the closing area could become trapped. There is a risk 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.
GWARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a side window from traveling
upwards during the automatic closing process,
the side window opens again automatically. Dur-
ing the manual closing process, the side window only opens again automatically after the corre-
sponding switch is released. The automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying atten-
tion when closing a side window.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rwhile resetting
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
Opening and closing the side win-
dows
The switches for all side windows are located on
the driver's door. There is also a switch on the
front-passenger door for the corresponding side window.
The switch on the driver's door has priority.
:Left
;Right
XSwitch on the power supply or switch on the
ignition with the Start/Stop button.
XTo open manually: press and hold the cor-
responding switch.
XTo open fully: press the switch beyond the
point of resistance and release it.
Automatic operation is started.
XTo close manually: pull the corresponding
switch and hold it.
XTo close fully: pull the switch beyond the
point of resistance and release it.
Automatic operation is started.
XTo interrupt automatic operation: press/
pull the corresponding switch again.
If you press the switch beyond the point of
resistance and release, automatic operation is
started in the corresponding direction. You can
stop automatic operation by pressing/pulling
the switch again.
You can still operate the side windows when you
switch off the power supply or the ignition. This
function remains active for five minutes or until
you open a door.
Side windows77
Opening and closing
Z
If the side window opens again slightly:
XImmediately pull the corresponding switch on
the door control panel until the side window is
completely closed (
Ypage 77).
XHold the switch for an additional second.
XIf the respective side window remains closed
after the button is released, then it has been
set correctly. If this is not the case, repeat the
steps above.
Problems with the side windows
GWARNING
If you close a side window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature is then not active. Parts of the
body could be trapped in the closing area in the process. This poses an increased risk of injury or
even fatal injury.
Make sure that no parts of the body are in the closing area. To stop the closing process, release
the switch or push the switch again to reopen the side window.
ProblemPossible causes/consequences and MSolutions
A side window cannot be
closed because it is
blocked by objects, e.g.
leaves in the window
guide.XRemove the objects.
XClose the side window.
A side window cannot be
closed and you cannot
see the cause.If a side window is obstructed during closing and reopens again
slightly:
XImmediately after the window blocks, pull the corresponding switch
again until the side window has closed.
The side window is closed with increased force.
If a side window is obstructed again during closing and reopens again slightly:
XImmediately after the window blocks, pull the corresponding switchagain until the side window has closed.
The side window is closed without the automatic reversing feature.
The side windows cannot
be opened or closed with
convenience opening.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 69) and replace it if necessary
(Ypage 69).
If a side window will still not open or close due to a malfunction, consult a qualified specialist
workshop.
Side windows79
Opening and closing
Z
Soft top (Roadster)
Important safety notes
GWARNING
If you do not fully open/close the soft top, the
soft-top hydraulics depressurize after a short
time. This causes the soft top to lower unex-
pectedly and may cause you or others to be
trapped. There is a risk of injury.
Always open or close the soft top completely.
!Never sit on the soft top or store heavy
objects on it. You will otherwise damage the
vehicle soft top and soft-top covers.
!When opening and closing the soft top,
make sure that:
Rthere is sufficient clearance above it, as the
soft top swings upwards
Rthere are no objects on the soft top or the
soft-top covers to the side
Rthe fabric is not dirty, wet or frozen
Rthe outside temperature is above -10 †
You could otherwise damage the soft top as
well as other parts of the vehicle.
Take the height of the vehicle into account when
opening and closing the soft top (
Ypage 291).
Make sure that the soft top is dry and clean
before opening or closing it. Otherwise, water or
dirt could enter the vehicle interior or trunk.
You can open or close the soft top:
Rwhen the vehicle is stationary or
Rwhen you do not exceed a speed of 31 mph
(50 km/h) (max. 37 mph (60 km/h), to avoid
interrupting the closing process while slightly
exceeding this speed)
If there is a strong head wind, it may not be pos-
sible to close the soft top fully. In order to close
the soft top fully, reduce your speed or stop the
vehicle in accordance with the traffic condi-
tions.
For safety reasons, Mercedes-Benz recom-
mends that you only open or close the soft top
when the vehicle is stationary.
If the soft top does not open or close fully, the
soft-top hydraulics are depressurized and the
soft top is lowered:
Rafter approximately 7 minutes when the igni-
tion is switched on
Rafter about
20 seconds if the ignition is switched off
Opening/closing with the soft top
switch
Important safety notes
GWARNING
When opening or closing the soft top, there is a risk that parts of the body could become
trapped by moving parts such as the roof
mechanism, the trunk lid, or the side win-
dows. There is a risk of injury.
When opening or closing the roof, make sure
that no parts of the body are in the vicinity of
moving parts. Release the switch if somebody
becomes trapped.
GWARNING
If the vehicle speed exceeds 35 mph
(60 km/h), the soft top stops during the open- ing or closing process. This impairs your view
to the rear. There is a risk of an accident.
Reduce your speed to below 35 mph
(60 km/h) or stop the vehicle in accordance
with the traffic conditions. Press or pull the
soft-top switch again in order to open or close
the soft top fully.
Opening and closing
XSelect SmartKey position 2with the Start/
Stop button (Ypage 110).
XWhen the vehicle is stationary, depress the
brake pedal and keep it depressed.
80Soft top (Roadster)
Opening and closing
Correct driver's seat position
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirror and fasten your seat belt before starting the engine.
Observe the following when adjusting steering
wheel :, seat belt ;and driver's seat =:
Ryou are as far away from the driver's air bag as
possible
Ryou are sitting in a normal upright position
Ryour thighs are slightly supported by the seat
cushion
Ryour legs are not entirely stretched and you
can depress the pedals properly
Rthe back of your head is supported at eye level
by the center of the head restraint
Ryou can hold the steering wheel with your
arms slightly bent
Ryou can move your legs freely
Ryou can see all the displays in the instrument
cluster clearly
Ryou should have a good overview of traffic
conditions
Rthe seat belt is pulled snugly against the body and is routed across the center of your shoul-
der and across your hips in the pelvic area
Further related subjects:
RManual seat adjustment (Ypage 85)
RElectrical seat adjustment (Ypage 86)
RFastening the seat belt correctly (Ypage 44).
RAdjusting the rear-view mirror and exterior
mirrors (Ypage 92).
RStoring seat settings, steering wheel and
exterior mirrors with the memory function
(
Ypage 94).
Seats
Important safety notes
GWARNING
Children could become trapped if they adjust
the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The seats can still be adjusted when there is no
SmartKey in the ignition lock.
GWARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(
Ypage 45) and "Children in the vehicle"
(Ypage 55).
84Seats
Seats, steering wheel and mirrors