steering and the brake boosting effect. Youwill require considerably more effort to
steer and brake. There is a risk of an acci-
dent.
Do not switch off the ignition while driv-
ing.
GWARNING
If the parking brake has not been fully
released when driving, the parking brake
can:
Roverheat and cause a fire
Rlose its hold function.
There is a risk of fire and an accident.
Release the parking brake fully before
driving off.
!Do not warm up the engine with the vehicle
stationary. Drive off immediately. Avoid
high engine speeds and driving at full
throttle until the engine has reached its
operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehi-
cle is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train.
SmartKey positions
005ATo remove the SmartKey
0047Power supply for some consumers, such as
the windshield wipers
0048Ignition (power supply for all consumers)
and drive position
0049Starting the engine
The steering is locked when you remove the
SmartKey from the ignition lock.
Starting the engine
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 vehi-
cle in motion if, for example, they:
Rrelease the parking brake.
Rshift the automatic transmission out of
park position P or shift manual trans-
mission into neutral.
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.
GWARNING
Combustion engines emit poisonous
exhaust gases such as carbon monoxide.
Inhaling these exhaust gases leads to poi-
soning. There is a risk of fatal injury.
Therefore never leave the engine running
in enclosed spaces without sufficient ven- tilation.
GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system
Driving87
>> Driving and parking.
Z
Display messagesPossible causes/consequences and0050Solutions
0079or0045/
003A/0046/
0044
Transmission Over‐heated See Opera‐tor's Manual
Only for vehicles with automatic transmission: 0079flashes
alternately with the currently selected transmission position. A
warning tone also sounds.
Further pulling away or crawling maneuvers have led to a critical
clutch temperature.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle to prevent it from rolling away.
XWait until the automatic transmission has cooled down and the
display message does not reappear after acknowledging it.
Electronics Mal‐functionVisitWork‐shop
In addition the \door warning lamp and other warning lamps,
e.g. 00E5, light up.
The central vehicle electronics system is malfunctioning.
After the engine is switched off:
Rdo not lock/unlock the doors using the remote control function of
the key
Ryou can no longer start the engine.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
Electronics Mal‐functionVisitWork‐shop
The transmission electronics are malfunctioning or the neutral
sensor is faulty.
Cruise control is automatically deactivated.
Starting the engine is only possible with the clutch pedal fully
depressed.
XVisit a qualified specialist workshop.
0039
Remove key
The key is in the ignition lock, the engine is switched off and the
driver's door is open.
XRemove the SmartKey.
Rain and Light Sen‐sor InoperativeThe rain/light sensor is malfunctioning.
Automatic headlamp mode and automatic intermittent wipe are not
available.
XSwitch on exterior lighting manually if required (Ypage 67).
XSwitch the windshield wipers on or off manually as required
(Ypage 74).
XVisit a qualified specialist workshop.
130Display messages
>> On-board computer and displays.
HEnvironmental note
When adding oil, take care not to spill any.
If oil enters the soil or waterways, it is
harmful to the environment.
!Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off.
You will find further information on engine
oils you can use in the "Technical data" sec-
tion (
Ypage 209).
XTurn cap 0043counter-clockwise and remove
it.
XAdd engine oil.
If the oil level is at or below the MIN mark on the oil dipstick, top up once with a max-
imum of 1.1 US qt (1 l) of engine oil.
XReplace cap 0043on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
XCheck the oil level again with the oil dip- stick (Ypage 150).
Front compartment
Service cover
Important safety notes
GWARNING
If the service cover is not locked, it may
come loose during driving and block your
view or endanger other road users. There is
a risk of an accident and injury.
Therefore, make sure that the service cover
is locked before every journey.
GWARNING
If the windshield wipers begin to operate
while the service cover is open, there is a
danger of injury from the wiper arms. There
is a risk of injury.
Always switch off the windshield wipers
and the ignition before opening the ser-
vice cover.
!To ensure unhindered air intake, care-
fully remove any snow or dirt from the ven- tilation slots above the service cover.
To prevent it from becoming damaged or
dirty, the service cover can be removed and
hung on the front of the vehicle.
The service cover is attached to the rear side
of the vehicle body with a strap.
XPark the vehicle on a flat, level surface.
XApply the parking brake.
XSelect a gear.
XSwitch the ignition off.
Removing
XTo unlock: remove lock cover 0043(driver's
side only) with the key.
XInsert the key into the lock and turn it to
position 0092.
Checking service products151
>> Maintenance and care.
Z
iThe vehicle should preferably be washed
by hand using a soft sponge, car shampoo
and plenty of water.
iUse only insect remover and car shampoo
from the range of approved smart care
products.
Cleaning the panoramic roof
!Only use cleaning agents or cleaning
cloths which are suitable for plastic light
lenses. Unsuitable cleaning agents or
cleaning cloths could scratch or damage
the plastic windows of the panoramic roof.
Do not use cleaning agents which contain
solvents.
XClean the plastic panes of the panoramic
roof using a wet sponge and a mild cleaning
agent, e.g. smart car shampoo, a commer-
cially available glass cleaner or cleaning
cloths.
Cleaning the wheels
GWARNING
The water jet from a circular jet nozzle
(dirt blasters) can cause invisible exte-
rior damage to the tires or chassis compo- nents. Components damaged in this way may
fail unexpectedly. There is a risk of an
accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced
immediately.
!Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
!Do not park the vehicle for an extended
period straight after cleaning it, partic-
ularly after having cleaned the wheels with
wheel cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after clean-
ing. Braking heats the brake discs and the
brake pads/linings, thus drying them. The
vehicle can then be parked.
Cleaning the windows
GWARNING
You could become trapped by the wind-
shield wipers if they start moving while
cleaning the windshield or wiper blades.
There is a risk of injury.
Always switch off the windshield wipers
and the ignition before cleaning the wind-
shield or wiper blades.
!Do not use dry cloths, abrasive products,
solvents or cleaning agents containing
solvents to clean the inside of the windows.
Do not touch the insides of the windows with
hard objects, e.g. an ice scraper or ring.
There is otherwise a risk of damaging the
windows.
!Clean the water drainage channels of the
windshield and the rear window at regular
intervals. Deposits such as leaves, petals
and pollen may under certain circumstan-
ces prevent water from draining away. This
can lead to corrosion damage and damage to
electronic components.
XClean the inside and outside of the windows
with a damp cloth and a cleaning agent that
is recommended and approved by smart.
Cleaning wiper blades
GWARNING
You could become trapped by the wind-
shield wipers if they start moving while
cleaning the windshield or wiper blades.
There is a risk of injury.
Always switch off the windshield wipers
and the ignition before cleaning the wind-
shield or wiper blades.
!Do not pull the wiper blade. Otherwise,
the wiper blade could be damaged.
!Do not clean wiper blades too often and do
not rub them too hard. Otherwise, the
graphite coating could be damaged. This
could cause wiper noise.
Care157
>> Maintenance and care.
Z
XRemove the towing eye (Ypage 171).
XSwitch off the hazard warning lamps.
Fuses
Important safety notes
GWARNING
If you manipulate or bridge a faulty fuse or if you replace it with a fuse with a higher
amperage, the electric cables could be
overloaded. This could result in a fire.
There is a risk of an accident and injury.
Always replace faulty fuses with the speci-
fied new fuses having the correct amper-
age.
!Only use fuses that have been approved for
smart vehicles and which have the correct
fuse rating for the system concerned. Oth-
erwise, components or systems could be
damaged.
The fuses in your vehicle serve to close down
faulty circuits. If a fuse blows, all the com-
ponents on the circuit and their functions
stop operating.
Blown fuses must be replaced with fuses of the
same rating, which you can recognize by the
color and value. The fuse ratings are listed in
the fuse allocation chart (
Ypage 175).
If a newly inserted fuse also blows, have the
cause traced and rectified at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center.
Before changing a fuse
XSecure the vehicle against rolling away
(Ypage 100).
XSwitch off all electrical consumers.
XTurn the key to position 0in the ignition
lock and remove it (Ypage 87). All indica-
tor lamps in the instrument cluster must be off.
The fuses are located in various fuse boxes:
RFuse box in the front area
RFuse box in the glove compartment
Fuse box in the front area
Pay attention to the "Important safety notes"
(Ypage 173).
GWARNING
If the windshield wipers begin to operate
while the service cover is open, there is a
danger of injury from the wiper arms. There
is a risk of injury.
Always switch off the windshield wipers
and the ignition before opening the ser-
vice cover.
!Make sure that no moisture can enter the
fuse box when the cover is open.
!When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
seeping in or dirt could otherwise impair
the operation of the fuses.
XMake sure that the windshield wipers are
turned off.
XOpen the service cover (Ypage 151).
You can now see fuse box 0043.
Fuse box in the glove compartment
Fuse box
!Do not use a pointed object such as a
screwdriver to open the cover in the dash-
board. You could damage the dashboard or
the cover.
!Make sure that no moisture can enter the
fuse box when the cover is open.
!When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
Fuses173
>> Breakdown assistance.
Z