Tread
The part of the tire that comes into contact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 5 lbs (2.3 kilograms).
These optional extras, such as high-perform-
ance brakes, level control, a roof rack or a
high-performance battery, are not included
in the curb weight and the weight of the
accessories.
TIN (Tire Identification Number)
This is a unique identifier which can be used
by a tire manufacturer to identify tires, for
example for a product recall, and thus iden-
tify the purchasers. The TIN is made up of the manufacturer's identity code, tire size, tire
type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
Treadwear indicators
Narrow bars (tread wear bars) that are dis-
tributed over the tire tread. If the tire tread
is level with the bars, the wear limit of 00CDin
(1.6 mm) has been reached.
Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions.
Total load limit
Nominal load and luggage load plus 68 kg
(150 lbs) multiplied by the number of seats in
the vehicle.
Changing a wheel
Flat tire
You can find information on what to do in the
event of a flat tire in the "Flat tire" section
(
Ypage 161).
Rotating the wheels
GWARNING
Never interchange the front and rear wheels
as they have different dimensions, e.g.
size, wheel offset etc. Otherwise, there
could be a negative effect on the road hold- ing and you could endanger yourself or oth-
ers.
!On vehicles equipped with a tire pressure
monitor, electronic components are loca-
ted in the wheel.
Tire-mounting tools should not be used
near the valve. This could damage the elec-
tronic components.
Only have tires changed at a qualified spe-
cialist workshop.
Various types of steel wheel can be fitted on
your vehicle. Some steel wheels have a red
mark in the hub cap area. The hub cap has to be
removed to see the red mark, see "Raising the
vehicle" in the "Wheel change" section
(
Ypage 197). When changing the wheels,
always fit wheels of the same type on all axles.
Always pay attention to the instructions and
safety notes when changing a wheel
(
Ypage 196).
The wear patterns on the front and rear tires
differ, depending on the operating condi-
tions. Front tires typically wear more on the
shoulders and the rear tires in the center.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and reac-
tivate the tire pressure monitor if necessary.
196Changing a wheel
>> Wheels and tires.
Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a
risk of hydroplaning. These advantages can
only be gained if the tires are fitted corre-
sponding to the direction of rotation.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
XMake sure that you have the appropriate
tire-changing tools. For further informa-
tion inquire at any smart center.
XStop the vehicle on solid, non-slippery and
level ground.
XApply the parking brake (Ypage 101).
XBring the front wheels into the straight-
ahead position.
XVehicles with automatic transmission:
shift the transmission to position P.
XVehicles with manual transmission:
depress the clutch pedal fully and engage
first or reverse gear.
XSwitch off the engine.
XRemove the SmartKey from the ignition
lock.
XAlso secure the vehicle against rolling
away.
Securing the vehicle to prevent it from
rolling away
XOn level ground:place chocks or other suit-
able items under the front and rear of the
wheel that is diagonally opposite the wheel
you wish to change.
XOn light downhill gradients: place chocks
or other suitable items in front of the
wheels of the front and rear axle.
Raising the vehicle
GWARNING
If you do not position the jack correctly at
the appropriate jacking point of the vehi- cle, the jack could tip over with the vehicle
raised. There is a risk of injury.
Only position the jack at the appropriate
jacking point of the vehicle. The base of the jack must be positioned vertically,
directly under the jacking point of the
vehicle.
Changing a wheel197
>> Wheels and tires.
Z
The vehicle may only be raised at the desig-
nated jacking points on the sill.
The jacking points are located just behind
the wheel housings of the front wheels and
just in front of the wheel housings of the rear
wheels (arrows). You can identify the jacking
points by the triangular indentations on the
sill.
To avoid damage, position the jack centrally
under the triangular indentations.
XPosition jack 0044centrally under the tri-
angular indentations at the jacking points on the sill 0043.
Example
XMake sure the foot of the jack is directly
beneath the jacking point.
XRaise the vehicle with jack 0044until the
tire is a maximum of 1.2 in (3 centimeters)
off the ground.
Removing a wheel
!Do not place wheel bolts in sand or on a
dirty surface. The bolt and wheel hub
threads could otherwise be damaged when
you screw them in.
XUnscrew the wheel bolts.
XRemove the wheel.
Mounting a new wheel
GWARNING
Oiled or greased wheel bolts or damaged
wheel bolts/hub threads can cause the wheel
bolts to come loose. As a result, you could
lose a wheel while driving. There is a risk of accident.
Never oil or grease wheel bolts. In the event
of damage to the threads, contact a quali-
fied specialist workshop immediately.
Have the damaged wheel bolts or hub threads
replaced/renewed. Do not continue driv-
ing.
GWARNING
If you tighten the wheel bolts or wheel nuts when the vehicle is raised, the jack could
tip over. There is a risk of injury.
Only tighten the wheel bolts or wheel nuts
when the vehicle is on the ground.
Always pay attention to the instructions and
safety notes in the "Changing a wheel" sec-
tion (
Ypage 196).
Only use wheel bolts that are designed for the
wheel and the vehicle. For safety reasons,
smart recommends that you only use wheel
bolts which have been approved for smart
vehicles and the respective wheel.
!To prevent damage to the paintwork, hold
the wheel securely against the wheel hub
while screwing in the first wheel bolt.
Changing a wheel199
>> Wheels and tires.
Z
XClean the wheel and wheel hub contact sur-faces.
XPlace the new wheel on the wheel hub and
push it on.
XTighten the wheel bolts until they are fin-
ger-tight.
Lowering the vehicle
GWARNING
The wheels could work loose if the wheel
nuts and bolts are not tightened to the
specified tightening torque. There is a
risk of accident.
Have the tightening torque immediately
checked at a qualified specialist workshop
after a wheel is changed.
XLower the vehicle until it is once again
standing firmly on the ground.
XPlace the jack to one side.
XTighten the wheel bolts in the sequence
indicated 0043to0085.
Do this evenly in a crosswise pattern. The
tightening torque must be 77 lb-ft (105 Nm).
XCheck the tire pressure of the newly moun-
ted wheel and adjust it if necessary.
Observe the recommended tire pressure
(
Ypage 180).
iVehicles with tire pressure monitor: all
wheels mounted must be equipped with
functioning sensors.
Steel wheel with hub cap
XVehicles with steel wheels and hub caps: fit
hub cap 0083so that tire valve 0084is not trap-
ped.
XPress the hub cap 0083evenly onto the wheel
with both hands.
XCheck to make sure the hub cap 0083is seated
safely on the wheel.
XVehicles with steel wheels and hub caps: fit
the hub cap.
Wheel and tire combinations
General notes
!
For safety reasons, smart recommends that
you only use tires and wheels which have
been specifically approved by smart for
your vehicle. These are specially adapted
to the control systems, such as ABS or ESP
®.
Only use tires and wheels specifically tes-
ted and approved by smart. Certain char-
acteristics, e.g. handling, vehicle noise
emissions or fuel consumption, may other-
wise be adversely affected. In addition,
when driving with a load, dimensional var-
iations and different tire deformation
characteristics could cause the tires to
make contact with the bodywork and axle
components. This could result in damage to
the tires or the vehicle.
200Wheel and tire combinations
>> Wheels and tires.
Useful information
i
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's Man- ual. Country-specific differences are pos-
sible. Bear in mind that your vehicle may
not feature all functions described here.
This also applies to safety-relevant sys-
tems and functions.
iRead the information on qualified spe-
cialist workshops: (Ypage 20).
Information regarding technical data
General information
i
The data stated here specifically refers
to a vehicle with standard equipment. Con- sult a smart center for the data for all vehi-
cle variants and trim levels.
Vehicle electronics
Retrofitting two-way radios and
mobile phones (RF transmitters)
GWARNING
The electromagnetic radiation from modi-
fied or incorrectly retrofitted RF-trans-
mitters can interfere with the vehicle
electronics. This can compromise the
operational safety of the vehicle. There is
a risk of an accident.
You should have all work to electrical and
electronic equipment carried out at a
qualified specialist workshop.
GWARNING
The electromagnetic radiation from incor-
rectly operated RF transmitters can inter-
fere with the vehicle electronics, for
example:
Rif the RF transmitter is not connected
with an exterior antenna
Rthe exterior antenna has been installed
incorrectly or is not a low-reflection
type
This can compromise the operational safety
of the vehicle. There is a risk of an acci-
dent.
Have the low-reflection exterior antenna
mounted at a qualified specialist work-
shop. When operating RF transmitters in
the vehicle, always connect them with the
low-reflection exterior antenna.
!The operating permit may be invalidated
if the instructions for installation and use of RF transmitters are not observed.
In particular, the following conditions
must be complied with:
Ronly approved wavebands may be used.
Rcompliance with the maximum permissi-
ble output in these wavebands is
required.
Ronly approved antenna positions may be
used.
Excessive levels of electromagnetic radia-
tion may cause damage to your health and the
health of others. Using an exterior antenna
takes into account current scientific discus-
sions relating to the possible health hazards
that may result from electromagnetic fields.
The following antenna positions may be used
if RF transmitters have been properly instal- led:
204Vehicle electronics
>> Technical data.
Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, stor-
age and disposal of service products on the
labels of the respective original contain-
ers. Always store service products sealed
in their original containers. Always keep
service products out of the reach of chil-
dren.
HEnvironmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following:
RFuels
RLubricants (e.g. engine oil, transmission
oil)
RCoolant
RBrake fluid
RWindshield washer fluid
RClimate control system refrigerant
Components and service products must be
matched. You should therefore only use prod-
ucts that have been tested and approved by
Mercedes-Benz.
Information on tested and approved products
can be obtained at a smart center.
You can recognize service products approved by Mercedes-Benz by the following inscrip-
tion on the containers:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB Approval (e.g. MB Approval 229.51)
Other designations or recommendations
indicate a level of quality or a specification in accordance with an MB Sheet Number (e.g.
MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
iFor further information inquire at any
smart center.
Fuel
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating
before refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or cloth-
ing and that it is not swallowed. Do not
inhale fuel vapors. Keep fuel away from
children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance
without delay.
RIf fuel is swallowed, seek medical assis-
tance without delay. Do not induce vom-
iting.
RImmediately change out of clothing
which has come into contact with fuel.
Tank capacity
ModelTotal capa- city
All models8.7 US gal(33.0 l)
Service products and filling capacities207
>> Technical data.
Z