Page 171 of 314

At the gas station
170
>> Operation >Turn off the engine.
>Remove the key from the starter switch.
>Open the fuel filler flap by pulling at the
point indicated by arrow
1.
>Turn the fuel filler cap counterclockwise
and hold on to it until possible pressure is
released.
>Take off the fuel filler cap.
!
The fuel filler cap is tethered to the fuel
filler flap. Do not drop the fuel filler cap. It
could damage the vehicle paint finish.
>To prevent gasoline vapors from escaping
into open air, fully insert filler nozzle unit.
>Only fill your tank until the filler nozzle unit
cuts out do not top off or overfill.>Replace the fuel filler cap.
>Turn the fuel filler cap clockwise until the
handle grip overturns.
i
Make sure to close the fuel filler flap be
fore locking the vehicle as the fuel filler flap
locking pin prevents closing after you have
locked the vehicle.
>Close the fuel filler flap.
You should hear the latch close shut.
i
Only use premium unleaded gasoline with a
minimum Posted Octane Rating of 91 (average
of 96 RON/86 MON). Information on gasoline
quality can normally be found on the fuel
pump. Please contact gas station personnel in
case labels on the pump cannot be found.
For more information on gasoline, see
"Premium unleaded gasoline" (
page 306),
see "Fuel requirements" (
page 306), and
the, or contact an authorized smart center.
G
Warning!
Overfilling of the fuel tank may create
pressure in the system which could cause
a gas discharge. This could cause the gas
to spray back out when removing the fuel
pump nozzle, which could cause personal
injury.
Page 172 of 314

Engine compartment
>> Operation
171 Engine compartment cover
>Turn off the engine.
>Set the parking brake.
>Open the tailgate.1
Cargo compartment floor
2
Fastening screw
3
Engine compartment cover
4
Hook
5
Top mounting of cargo compartment cover
blind
G
Warning!
High outside temperature, stopandgo
traffic, driving on long uphill grades or
driving at high engine speed may in
crease the temperature in the engine
compartment. Therefore, the engine
compartment cover and parts in the area
around the engine compartment cover
may be hot. Parts of the engine can be
come very hot. To prevent burns, let the
engine cool off completely before touch
ing the engine compartment cover, parts
in the area around the engine compart
ment cover, and parts of the engine.
G
Warning!
Exercise extreme caution if you see
flames or smoke coming from the engine
compartment. Move away from the vehicle
and call the fire department.
If the coolant temperature warning lamp
indicates that the engine is overheated,
do not attempt to open the engine com
partment cover. Move away from the ve
hicle and wait until the engine has cooled
before opening the engine compartment.G
Warning!
To help prevent personal injury, stay
clear of moving parts when the engine
compartment cover is open and the
engine is running.
Page 173 of 314

Engine compartment
172
>> Operation> Opening: Grasp the strap on cargo com
partment floor
1.
>Lift cargo compartment floor
1 with the
strap.
>Engage hook
4 into top mounting of cargo
compartment cover blind
5.
>Remove fastening screw
2.
>Remove engine compartment cover
3.
>Closing: Slide engine compartment cover
3
forward into the tabs provided.
>Tighten fastening screw
2.
>Disengage hook
4
from top mounting
5.
>Fold cargo compartment floor
1 back
down.
>Push the right hand and left hand cargo
compartment floor edges under the edges
of the side panels.
>Close the tailgate.
Engine oilThe amount of oil your engine needs will de
pend on a number of factors, including driving
style. Increased oil consumption can occur
when
•the vehicle is new
• the vehicle is driven at higher engine
speeds frequently
Engine oil consumption checks should only be
made after the vehicle breakin period.!
Do not use any special lubricant additives,
as these may increase wear and damage the
drive assemblies. Using special additives not
approved by smart may cause damage not
covered by the smart Limited Warranty.
More information on this subject is available
at any smart center.
G
Warning!
The engine is equipped with a transistor
ized ignition system that utilizes high
voltage. Don not touch any components
(ignition coils, spark plug sockets, diag
nostic socket) of the ignition system
• while the engine is running
• while starting the engine
• if ignition is "on" and the engine is
turned manually
Page 175 of 314

Engine compartment
174
>> Operation Adding engine oil
!
Only use approved engine oils and oil fil
ters required for vehicles with Maintenance
System. For a listing of approved engine oils
and oil filters contact an authorized smart
center.
Using engine oils and oil filters of specifica
tion other than those expressly required for
the Maintenance System, or changing of oil
and oil filter at change intervals longer than
those called for by the Maintenance System
will result in engine or emission control sys
tem damage not covered by the smart Limited
Warranty.The filler cap is located in the engine
compartment on the passenger side.
1
Filler cap
>Unscrew filler cap
1
from filler neck.
>Add engine oil as required.
Do not add more than 0.53 US qt (0.5 l)
engine oil at a time.
>Wait one minute until the engine oil has run
into the oil pan.
>Check the engine oil level once more.
>Add engine oil once more if necessary.
G
Warning!
When adding engine oil, always use a fun
nel to avoid spilling oil on any hot parts
such as the catalytic converter or ex
haust system.
If this should happen, however, the en
gine must be thoroughly cleaned before
you continue your trip. The engine oil
could otherwise ignite.P01.00285231
Page 177 of 314

Front compartment
176
>> Operation
Service flapYou can remove the service flap and hang it on
the front of the vehicle so that it does not get
damaged or dirty.
!
Check the fill levels at regular intervals.
!
Carefully remove ice, snow, and any other
deposits from the air intake grilles above the
service flap to ensure air intake at all times.>Park the vehicle on level ground.
>Turn off the engine.
>Set the parking brake.
1
Lever
2
Service flap
>Removing: Fold both levers
1 outwards in
the direction of the arrows.
Service flap
2 is unlocked.
>Lift service flap2 at the front.
>Remove service flap2.
G
Warning!
Always turn key in starter switch to
position0 and remove the key from the
starter switch before opening the ser
vice flap.
If the windshield wipers should inadvert
ently be switched on, you could be seri
ously injured by the wiper washer drive,
which is located just below the service
flap.
G
Warning!
Make sure that the service flap is locked
while driving. Otherwise, the service flap
could become detached and pose a haz
ard to you or others.G
Warning!
To help prevent personal injury, stay
clear of moving parts when the service
flap is open.
The radiator fan may continue to run for
approximately 30 seconds or may even
restart after the engine has been turned
off. Stay clear of fan blades.
Page 179 of 314

Front compartment
178
>> Operation
Coolant
The engine coolant is a mixture of water and
anticorrosion/antifreeze.
To check the coolant level the vehicle must be
parked on level ground and the engine must
have cooled down. For more information, see
"Coolants" (
page 309).Checking coolant level
The coolant reservoir is located in the front
compartment on the driver’s side.
1
Pressure cap
2
Marking bar
G
Warning!
In order to avoid potentially serious
burns:
• Use extreme caution when opening the
service flap if there are any signs of
steam or coolant leaking from the
cooling system, or if the coolant
temperature warning lampD in the
instrument cluster indicates that the
coolant is overheated.
• Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid
and is under pressure.
• Using a rag, slowly open the cap ap
proximately
1/2 turn to relieve excess
pressure. If opened immediately,
scalding hot fluid and steam will be
blown out under pressure.
P20.30226531
Page 180 of 314

Front compartment
>> Operation
179
>Allow the radiator to cool down for at least
30 minutes.
>Using a rag, turn pressure cap
1 slowly
approximately one half turn counterclock
wise to release any excess pressure.
>Continue turning pressure cap1
counter
clockwise
and remove it.
The coolant level is correct if the level
• for cold coolant: reaches marking bar
2
visible through the filling opening
• for warm coolant: is approximately 0.6 in
(1.5 cm) higher
>If necessary, add coolant.
Adding coolant
>Add coolant as required. The coolant level
may not exceed the maximum filling level.
>Replace and tighten pressure cap
1.
Windshield/rear window
1 washer
system
Both the windshield and the rear window
1
washer are supplied from the windshield
washer reservoir.
The recommended minimum filling level is
1.06 US qt (1.0 l).
The windshield washer reservoir is located in
the front compartment on the driver’s side.
1
CapDuring all seasons,
• use a windshield washer concentrate la
beled for summer and water for tempera
tures above freezing point.
• use a windshield washer concentrate la
beled for winter and water for tempera
tures below freezing point.
1 coupé only.
P82.35248831
G
Warning!
Windshield washer concentrate is highly
flammable. Fire, naked flames and
smoking are prohibited when windshield
washer concentrate is being handled.
Page 181 of 314

Front compartment
180
>> Operation
!
Always use a windshield washer concen
trate labeled for winter where temperatures
may fall below freezing point. Failure to do so
could result in damage to the washer system/
reservoir.
>Premix the windshield washer fluid in a
suitable container.
Observe mixing ratios depending on the
outside temperature (
page 308).
>Use the tab to pull cap1 upwards.
>Refill the windshield washer reservoir.
>Push cap
1 onto the windshield washer
reservoir.
Brake fluidThe brake fluid level in the brake fluid
reservoir may be too low if the brake warning
lamp in the instrument cluster comes on
(page 34) although the parking brake is
released.
!
If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark
or below, have the brake system checked for
brake pad thickness and leaks immediately.
Contact an authorized smart center immedi
ately. Do not add brake fluid as this will not
solve the problem.
The brake fluid reservoir is located in the
front compartment on the driver’s side.
1
Cap
G
Warning!
During vehicle operation, the boiling
point of the brake fluid is continuously
reduced through the absorption of
moisture from the atmosphere. Under
extremely strenuous operating condi
tions, this moisture content can lead to
the formation of bubbles in the system,
thus reducing the system’s efficiency.
Therefore, the brake fluid must be re
placed regularly. Refer to your vehicle’s
Maintenance Booklet for replacement
interval.P42.00213331