Information ............................ 204
Tires/wheels ........................... 200
Vehicle data ........................... 212
Temperature
Coolant .................................. 113
Outside temperature ................. 109
Setting (climate control) ............ 81
Setting the display units ...........1 16
Thorax/pelvisbag ........................... 35
Time
Setting ................................... 114
Setting (dashboard clock) ........... 110
Setting the time format (on-
board computer with a color
display) ................................. 114
Tire pressure
Checking manually .................... 183
Display message ....................... 126
Important safety notes ............... 183
Maximum ................................ 182
Not reached (TIREFIT) ................1 63
Notes .....................................1 81
Reached (TIREFIT) .................... 163
Recommended .......................... 180
Tire pressure monitor
Function/notes ........................ 183
General notes .......................... 183
Important safety notes ............... 183
Restarting (on-board computer
with color display) ...................1 85
Warning lamp .......................... 139
Warning message ......................1 84
TIREFIT kit ..................................1 61
Tires
Aspect ratio (definition) ...........1 95
Average weight of the vehicle
occupants (definition) .............. 194
Bar (definition) ....................... 194
Changing a wheel ..................... 196
Characteristics ....................... 194
Checking ................................ 178
Curb weight (definition) ........... 195
Definition of terms .................. 194
Direction of rotation ................ 197
Display message ....................... 126
Distribution of the vehicle
occupants (definition) .............. 196 DOT (Department of Transporta-
tion) (definition) ..................... 194
DOT, Tire
Identification Num-
ber (TIN) ................................ 193
GAWR (Gross Axle Weight Rating)
(definition) ............................ 195
General notes .......................... 200
GVW (Gross Vehicle Weight)
(definition) ............................ 195
GVWR (Gross Vehicle Weight Rat- ing) (definition) ...................... 195
Important safety notes ............... 177
Increased vehicle weight due to
optional equipment (defini-
tion) ...................................... 194
Kilopascal (kPa) (definition) ...... 195
Labeling (overview) .................. 191
Load bearing index (definition) .. 196
Load index .............................. 193
Load index (definition) .............1 95
M+S tires (winter tires) ............. 179
Maximum load on a tire (defini- tion) ...................................... 195
Maximum loaded vehicle weight
(definition) ............................ 195
Maximum permissible tire
pressure (definition) ................ 195
Maximum tire load .................... 193
Maximum tire load (definition) ... 195
Optional equipment weight
(definition) ............................ 196
PSI (pounds per square inch)
(definition) ............................ 195
Replacing ............................... 196
Service life ............................ 178
Sidewall (definition) ................ 196
Snow chains ............................. 179
Speed rating (definition) .......... 195
Storing .................................. 197
Structure and characteristics
(definition) ............................ 194
Summer tires in winter .............. 179
Temperature ............................ 190
TIN (Tire Identification Num-
ber) (definition) ...................... 196
Tire bead (definition) .............. 196
Tire pressure (definition) ......... 195
Tire pressures (recommended) .... 194
Index13
Protection of the environment
General notes
HEnvironmental note
Daimler's declared policy is one of com-
prehensive environmental protection.
The objectives are for the natural resour-
ces that form the basis of our existence on
this planet to be used sparingly and in a
manner that takes the requirements of both
nature and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environ-
mentally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are
affected by these factors:
Roperating conditions of your vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel
consumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Ra regularly serviced vehicle will con-
tribute to environmental protection. You
should therefore adhere to the service
intervals.
RAlways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal
when starting the engine.
Rdo not warm up the engine when the vehi-
cle is stationary.
Rdrive carefully and maintain a safe dis- tance from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each
gear only up to 00C3of its maximum engine
speed.
Rswitch off the engine in stationary traf-
fic.
Rkeep an eye on the vehicle's fuel con-
sumption.
Environmental concerns and recom-
mendations
Wherever the operating instructions require you to dispose of materials, first try to
regenerate or re-use them. Observe the rel-
evant environmental rules and regulations
when disposing of materials. In this way you
will help to protect the environment.
Genuine smart parts
HEnvironmental note
Daimler AG also supplies reconditioned
major assemblies and parts which are of the
same quality as new parts. They are covered
by the same Limited Warranty entitlements
as new parts.
!Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed
in the following areas of your vehicle:
Rdoors
Rdoor pillars
Rdoor sills
Rseats
Rcockpit
Rinstrument cluster
Rcenter console
Do not install accessories such as audio
systems in these areas. Do not carry out
repairs or welding. You could impair the
operating efficiency of the restraint sys-
tems.
Have aftermarket accessories installed at
a qualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels
16>> Introduction.
additional injury, for example, in an acci-
dent, during braking or an abrupt change of
direction. This poses an increased risk of
injury or even fatal injury.
For this reason, always secure persons
under 5 ft (1.50 m) in height in suitable
restraint systems.
If a child younger than twelve years old and
under 5 ft (1.50 m) in height is traveling in the
vehicle:
Ralways secure the child in a child restraint
system suitable for this smart vehicle. The
child restraint system must be appropriate
to the age, weight and size of the child
Ralways observe the instructions and safety
notes on "Children in the vehicle"
(
Ypage 42) in addition to the child
restraint system manufacturer's installa-
tion and operating instructions
Rbe sure to observe the instructions and
safety notes on the "Occupant classifica-
tion system (OCS)" (
Ypage 36)
GWARNING
The seat belts may not perform their inten- ded protective function if:
Rthey are damaged, modified, extremely
dirty, bleach or dyed
Rthe seat belt buckle is damaged or
extremely dirty
Rthe Emergency Tensioning Devices, belt
anchorages or inertia reels have been
modified
Seat belts may sustain non-visible damage
in an accident, e.g. due to glass splinters.
Modified or damaged seat belts may tear or
fail, e.g. in an accident. Modified Emer-
gency Tensioning Devices could acciden-
tally trigger or fail to deploy when neces-
sary. This poses an increased risk of injury
or even fatal injury.
Never modify the seat belts, Emergency
Tensioning Devices, belt anchorages or
inertia reels. Make sure that the seat belts
are undamaged, not worn out and clean. Fol-
lowing an accident, have the seat belts
checked immediately at a qualified spe-
cialist workshop.
Only use seat belts that have been approved
for your vehicle by smart.
Proper use of the seat belts
Pay attention to the safety notes about the
seat belt (Ypage 31).
All vehicle occupants must fasten the seat
belt correctly before setting off. Make sure
that all occupants are wearing their seat
belts correctly for the entire journey.
When fastening the seat belt, make sure that:
RThe seat belt tongue is inserted into the
belt buckle that belongs to the seat.
RThe seat belt is tightened across your body.
Avoid wearing bulky clothing, e.g. a winter coat.
RThe seat belt is not twisted.
Only then can the forces produced in the
event of an accident be evenly distributed
across the belt.
RThe shoulder section of the belt must always
be routed across the center of the shoulder.
The shoulder section of the belt should not come into contact with your neck and must
not be routed under the arm.
RThe lap belt must be taut and as low as pos-
sible over your lap.
The lap belt must always pass across your
hip joints and never across your stomach or
abdomen. Pregnant women must take par-
ticular care. If necessary, the lap belt canbe pushed down across the hip joints and
pulled tight using the shoulder section.
RThe seat belt is not routed over sharp,
pointed or fragile objects.
If these items are on or in your clothing,
e.g. eyeglasses, pens, keys, etc., stow theseitems in a more suitable location.
ROnly one person should use each seat belt at
any one time.
On no account should babies or children
travel sitting on the lap of another vehicle occupant. During an accident, they could be
crushed between the occupant and seat belt.
RObjects are not secured with a seat belt if
the seat belt is being used by one of the
vehicle’s occupants.
32Occupant safety
>> Safety.
GWARNING
If you modify the air bag cover or affix
objects such as stickers to it, the air bag
can no longer function correctly. There is
an increased risk of injury.
Never modify an air bag cover or affix
objects to it.
GWARNING
Sensors to control the air bags are located
in the doors. Modifications or work not
performed correctly to the doors or door
paneling, as well as damaged doors, can
lead to the function of the sensors being
impaired. The air bags might therefore not
function properly anymore. Consequently,
the air bags cannot protect vehicle occu-
pants as they are designed to do. There is an increased risk of injury.
Never modify the doors or parts of the
doors. Always have work on the doors or door
paneling carried out at a qualified spe-
cialist workshop.
Front air bags
Driver's air bag 0043deploys in front of the
steering wheel. Front-passenger front air
bag 0044deploys in front of and above the glove
box.
When deployed, the front air bags offer addi-
tional head and thorax protection for the
occupants in the driver's and front-
passenger seats.
The PASSENGER AIR BAG OFF and PASSENGER
AIR BAG ON indicator lamps inform you about the status of the front-passenger air bag
(
Ypage 30).
The front-passenger front air bag will only
deploy if:
Rthe system, based on the OCS weight sensor
readings, detects that the front-passenger
seat is occupied (
Ypage 36). The
PASSENGER AIR BAG ON indicator lamp is
lit (
Ypage 37)
Rthe restraint system control unit predicts a high accident severity
Knee bags
Driver's knee bag 0043deploys under the steer-
ing column and front-passenger knee bag 0044
under the glove box. The driver's and front-
passenger knee bags are triggered together
with the front air bags.
The driver's and front-passenger knee bags
offer additional thigh, knee and lower leg
protection for the occupants in the front
seats.
Thorax/pelvis air bags
GWARNING
Unsuitable seat covers could restrict or
even prevent the deployment of the air bags integrated into the seats. Consequently,
the air bags cannot protect vehicle occu-
pants as they are designed to do. In addi-
tion, the operation of the occupant classi-
fication system (OCS) could be adversely
affected. This poses an increased risk of
injury or even fatal injury.
You should only use seat covers that have
been approved for the corresponding seats
by smart.
Occupant safety35
>> Safety.
Z
Thorax/pelvis air bags0043deploy next to the
outer bolster of the seat backrest.
When deployed, the thorax/pelvis air bags
offer additional thorax and pelvis protec-
tion.
In the event of a side impact, the thorax/
pelvis air bag is deployed on the side on
which the impact occurs.
The thorax/pelvis air bag on the front-
passenger side deploys under the following
conditions:
Rthe OCS system detects that the front-
passenger seat is occupied or
Rthe belt tongue is engaged in the belt
buckle of the front-passenger seat
If the belt tongue is engaged in the belt
buckle, the thorax/pelvis air bag on the
front-passenger side deploys if an appro-
priate accident situation occurs. In this
case, deployment is independent of whether
the front-passenger seat is occupied or not.
Window curtain air bags
Window curtain air bags 0043are integrated
into the side of the roof frame above the
doors. When deployed, the window curtain air bag
enhances the level of protection for the head.
However, it does not protect the chest or arms.
In the event of a side impact, the window cur-
tain air bag is deployed on the side on which
the impact occurs.
If the system determines that they can offer
additional protection to that provided by the
seat belt, a window curtain air bag may be
deployed in other accident situations
(
Ypage 40).
Occupant Classification System (OCS)
Introduction
The Occupant Classification System (OCS)
categorizes the person in the front-
passenger seat. Depending on that result, the
front-passenger front air bag and front-
passenger knee bag are either enabled or
deactivated.
The system does not deactivate:
Rthe thorax/pelvis air bag
Rthe window curtain air bag
Rthe Emergency Tensioning Devices
Prerequisites
To be classified correctly, the front
passenger must sit:
Rwith the seat belt fastened correctly
Rin an almost upright position with their
back against the seat backrest
Rwith their feet resting on the floor, if pos-
sible
If the front passenger does not observe these
conditions, OCS may produce a false classi-
fication, e.g. because the front passenger:
Rtransfers their weight by supporting them-
selves on a vehicle armrest
Rsits in such a way that their weight is
raised from the seat cushion
If you install a child restraint system on the
front-passenger seat, be sure to observe the
correct positioning of the child restraint
system. Never place objects under or behind
the child restraint system, e.g. cushions. The entire base of the child restraint system must
always rest on the seat cushion of the front-
passenger seat. The backrest of the forward-
36Occupant safety
>> Safety.
Problems with the occupant classification system (OCS)
Be sure to observe the notes on "System self-test" (Ypage 39).
ProblemPossible causes/consequences and0050Solutions
The PASSENGER AIR BAG
OFF indicator lamp
lights up and remains
lit, even though the
front-passenger seat is
occupied by an adult or
a person of a stature
corresponding to that
of an adult.The classification of the person on the front-passenger seat is
incorrect.
XMake sure the conditions for a correct classification of the
person on the front-passenger seat are met (Ypage 36).
XIf the PASSENGER AIR BAG OFF indicator lamp remains lit, the
front-passenger seat may not be used.
XHave the OCS checked at a smart center as soon as possible.
The PASSENGER AIR BAG
OFF indicator lamp
does not light up and/or
does not stay on.
The front-passenger
seat is:
Runoccupied
Roccupied with the
weight of a child up
to twelve months old
in a child restraint
system
OCS is malfunctioning.
XMake sure there is nothing between the seat cushion and the
child seat.
XMake sure that the entire base of the child restraint system rests
on the seat cushion of the front-passenger seat. The backrest of
the forward-facing child restraint system must lie as flat as
possible against the backrest of the front-passenger seat. If
necessary, adjust the position of the front-passenger seat.
XWhen installing the child restraint system, make sure that the
seat belt is tight. Do not pull the seat belt tight using the front-
passenger seat adjustment. This could result in the seat belt and
the child restraint system being pulled too tightly.
XCheck for correct installation of the child restraint system.
XMake sure that no objects are applying additional weight onto
the seat.
XIf the PASSENGER AIR BAG OFF indicator lamp remains off and/or
the PASSENGER AIR BAG ON indicator lamp lights up, do not
install a child restraint system on the front-passenger seat.
XHave the OCS checked at a smart center as soon as possible.
Deployment of belt tensioners and air
bags
Important safety notes
GWARNING
The air bag parts are hot after an air bag
has been deployed. There is a risk of
injury.
Do not touch the air bag parts. Have a
deployed air bag replaced at a qualified
specialist workshop as soon as possible.
GWARNING
A deployed air bag no longer offers any
protection and cannot provide the intended
protection in an accident. There is an
increased risk of injury.
Have the vehicle towed to a qualified spe-
cialist workshop in order to have a
deployed air bag replaced.
For your own safety and that of your front
passenger, it is important that you have
deployed air bags replaced and faulty air
bags repaired. This will help to make sure the
air bags continue to perform their protective
function for the vehicle occupants in the
event of a crash.
40Occupant safety
>> Safety.
Rthe deformation characteristics of the
vehicle
Rthe characteristics of the object with
which the vehicle has collided
Factors which can only be seen and measured
after a collision has occurred do not play a
decisive role in the deployment of an air bag.
Nor do they provide an indication of air bag
deployment.
The vehicle can be deformed considerably,
without an air bag being deployed. This is the
case if only parts which are relatively easily deformed are affected and the rate of decel-
eration is not high. Conversely, air bags may
be deployed even though the vehicle suffers
only minor deformation. This is the case if,
for example, very rigid vehicle parts such as longitudinal body members are hit, and suf-
ficient deceleration occurs as a result.
If the control unit of the restraint system
detects a side impact or a vehicle rollover,
the relevant components of the restraint sys-
tem are activated separately depending on
the anticipated type of accident.
RThorax/pelvis air bag on the side of
impact, independently of the Emergency
Tensioning Device and the use of the seat
belt
The thorax/pelvis air bag on the front-
passenger side deploys under the following
conditions:
-the OCS system detects that the front-
passenger seat is occupied or
-the belt tongue is engaged in the belt
buckle of the front-passenger seat
RWindow curtain air bag on the side of
impact, independently of the use of the seat
belt and independently of whether the
front-passenger seat is occupied
RWindow curtain air bags on the driver's andfront-passenger side in certain situations
when the vehicle rolls over, if the system
determines that deployment can offer
additional protection to that provided by
the seat belt
REmergency Tensioning Devices, if the sys-
tem determines that deployment can offer
additional protection in this situation
iNot all air bags are deployed in an acci-
dent. The differ ent air bag systems work
independently of each other. How the air bag system works is determined
by the severity of the accident detected,
especially the vehicle deceleration or
acceleration and the apparent type of acci-
dent:
RFrontal collision
RSide impact
RRollover
Children in the vehicle
Important safety notes
If a child younger than 12 years and under 5 ft
(1.50 m) in height is traveling in the vehicle:
Ralways secure the child in a child restraint
system suitable for Mercedes-Benz vehi-
cles. The child restraint system must be
appropriate to the age, weight and size of
the child
Rbe sure to observe the instructions and
safety notes in this section in addition to
the child restraint system manufacturer's
installation instructions
Rbe sure to observe the instructions and
safety notes in "Occupant classification
system (OCS)" (
Ypage 36)
GWARNING
If you leave children unsupervised in the
vehicle, they could set it in motion by, for example:
Rrelease the parking brake.
Rshift the automatic transmission out of
park position Por shift manual trans-
mission into neutral.
Rstart the engine.
In addition, they may operate vehicle
equipment and become trapped. 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 unsupervised in the
vehicle.
GWARNING
If persons, particularly children are sub-
jected to prolonged exposure to extreme
42Children in the vehicle
>> Safety.
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).
Stowage areas
Loading guidelines
GWARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could
slip, tip over or be flung around and
thereby hit vehicle occupants. There is a
risk of injury, particularly in the event of
sudden braking or a sudden change in
direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before
the journey.
GWARNING
Combustion engines emit poisonous
exhaust gases such as carbon monoxide. If
the tailgate is open when the engine is
running, particularly if the vehicle is
moving, exhaust fumes could enter the
passenger compartment. There is a risk of
poisoning.
Turn off the engine before opening the
tailgate. Never drive with the tailgate
open.
Your vehicle has not been approved by the
manufacturer for towing a trailer. A trailer
could seriously impair driving safety.
Mounting a basic rack, a cycle rack or a ski/
snowboard rack on the rear of the vehicle will change the axle load distribution as speci-
fied by the vehicle manufacturer. Read the
operating instructions for the individual
accessories.
The handling characteristics of a laden vehi-
cle are dependent on the distribution of the
load within the vehicle. For this reason, you
should observe the following notes when
transporting a load:
Rnever exceed the maximum permissible
gross vehicle weight or the permissible
axle loads for the vehicle (including occu-
pants). The values are specified on the
vehicle identification plate on the B-pil-
lar of the driver's door
Rthe load must not protrude above the upper
edge of the head restraints
Rensure that no items of luggage can enter
the vehicle interior above or between the
front seats
Rensure that loaded objects are stowed
safely and are secured
Rload heavy objects at the bottom and light
objects at the top
Stowage space
Important safety notes
GWARNING
If you stow objects in the vehicle interior
in an unsuitable way, they could slip or be
thrown around and thus hit vehicle occu-
pants. Additionally, the cup holders, open
stowage spaces and mobile phone brackets
cannot restrain the objects placed in them
in the event of an accident. There is a risk
of injury, especially in the event of brak-
ing or sudden changes in direction.
RAlways stow objects so they cannot be
thrown around in these or similar situa-
tions.
RAlways ensure that objects do not pro-
trude from the stowage compartments or
stowage nets.
142Stowage areas
>> Stowage and features.