ECU SMART FORTWO 2016 Owners Manual

High-beam headlamps ................. 69
Light switch ............................. 67
Low-beam headlamps .................. 68
Parking lamps ........................... 68
Rear fog lamp ........................... 68
Setting the brightness of the
ambient lighting (on-board
computer) ............................... 116
Turn signals ............................. 68
see Interior lighting
see Replacing bulbs
Loading guidelines ....................... 142
Locking
see Central locking
Locking (doors)
Automatic ................................ 55
Emergency locking ..................... 55
From inside (central locking
button) .................................... 54
Locking centrally
see Central locking
Loudspeaker
see Subwoofer
Low-beam headlamps
Changing bulbs ......................... 72
Switching on/off ....................... 68
Lubricant additives
see Additives (engine oil)
M
M+S tires (winter tires) ................. 179
Malfunction message
see Display messages
Manual transmission
Engaging reverse gear ................ 91
Gear lever ................................ 91
Malfunction (on-board computer
with a color display) ................. 130
Pulling away ............................. 88
Shift recommendation ................. 91
Shifting to neutral .................... 91
Starting the engine ................... 88
Manually releasing the selector
lever lock (automatic transmis-
sion) ........................................... 97
Matte finish (cleaning instruc-
tions) ......................................... 156 Message memory (color display)
....... 113
Message memory (on-board com-
puter) ......................................... 113
Messages
see Display messages
Mirrors
see Exterior mirrors
see Rear-view mirror
Mobile phone
Frequencies ............................ 204
Installation ............................ 204
Transmission output (maximum) .. 204
Model series
see Vehicle identification plate
Mounting wheels
Lowering the vehicle ................ 200
Mounting a new wheel ................ 199
Preparing the vehicle ............... 197
Raising the vehicle .................. 197
Removing a wheel ..................... 199
Securing the vehicle against
rolling away ............................ 197
Multi-functional seat
see Seats
Multifunction steering wheel
Overview ................................. 25
N
Notes on breaking-in a new vehicle ... 86
O
Occupant Classification System
(OCS)
Conditions ............................... 36
Faults ..................................... 40
Operation ................................ 37
System self-test ........................ 39
Occupant safety
Children in the vehicle .............. 42
Important safety notes ................ 29
Introduction to the restraint
system ..................................... 29
Occupant Classification System
(OCS) ...................................... 36
PASSENGER AIR BAG indicator
lamps ...................................... 30
Pets in the vehicle .................... 46
Index9

Tire size (data) ....................... 200
Tire size designation, load-
bearing capacity, speed rating ... 191
Tire tread ...............................178
Tire tread (definition) .............. 196
Total load limit (definition) ...... 196
Traction .................................1 90
Traction (definition) ................ 196
Tread wear .............................. 190
Uniform Tire Quality Grading
Standards ............................... 189
Uniform Tire Quality Grading
Standards (definition) .............. 194
Wear indicator (definition) ....... 196
Wheel and tire combination ....... 202
Wheel rim (definition) .............. 195
see Flat tire
Tool
see Vehicle tool kit
Top Tether .................................... 44
Total distance recorder
Setting the display unit .............1 16
Tow-starting
Emergency engine starting ......... 172
Important safety notes ............... 170
Towing away
Important safety guidelines .......1 70
Installing the towing eye ........... 171
Removing the towing eye ............ 171
With both axles on the ground ...... 171
With the rear axle raised ........... 171
Transmission
see Automatic transmission
see Manual transmission
Transmission position display .........92
Transporting the vehicle ................ 172
Trip computer (on-board computer) ... 112
Trip meter
Setting the display unit .............1 16
Setting the display units ........... 116
Trip odometer
Calling up .............................. 112
Trunk
Fitting the cover ..................... 144
Installing/removing the cover ....1 45
see Tailgate
Trunk (front)
see Service cover Turn signals
Changing bulbs (front) ................ 72
Changing bulbs (rear) ................. 73
Switching on/off ....................... 68
Turn signals
see Turn signals
Two-way radio
Frequencies ............................ 204
Installation ............................ 204
Transmission output (maximum) .. 204
Type identification plate
see Vehicle identification plate
U
UnlockingEmergency unlocking .................. 55
From inside the vehicle (central
unlocking button) ...................... 54
V
VehicleCorrect use .............................. 20
Data acquisition ....................... 20
Electronics malfunction (dis-
play message) .......................... 130
Electronics malfunction (warn-
ing lamp) ................................ 141
Equipment ................................ 17
Loading .................................. 185
Locking (in an emergency) ........... 55
Locking (SmartKey) .................... 51
Lowering ................................ 200
Maintenance ............................. 17
Parking for a long period .......... 102
Pulling away ............................. 88
Raising .................................. 197
Reporting problems ................... 20
Securing from rolling away ........ 197
Tow-starting ........................... 170
Towing away ............................ 170
Transporting ........................... 172
Unlocking (in an emergency) ........ 55
Unlocking (SmartKey) ................. 51
Vehicle data ........................... 212
Vehicle battery
see Battery (vehicle)
Vehicle data ................................ 212
14Index

electronic equipment carried out at a
qualified specialist workshop.
If you make any changes to the vehicle elec-
tronics, the general operating permit is ren-
dered invalid.
!There is a risk of damage to the vehicle if:
Rthe vehicle becomes stuck, e.g. on a high
curb or an unpaved road
Ryou drive too fast over an obstacle, e.g. a
curb or a hole in the road
Ra heavy object strikes the undercarriage
or parts of the chassis
In situations like this, the body, the under-
carriage, chassis parts, wheels or tires
could be damaged without the damage being
visible. Components damaged in this way
can unexpectedly fail or, in the case of an
accident, no longer withstand the strain
they are designed to.
If the underbody paneling is damaged,
combustible materials such as leaves,
grass or twigs can gather between the
underbody and the underbody paneling. If
these materials come in contact with hot
parts of the exhaust system, they can catch
fire.
In such situations, have the vehicle
checked and repaired immediately at a
qualified specialist workshop. If on con-
tinuing your journey you notice that driv-
ing safety is impaired, pull over and stop
the vehicle immediately, paying attention
to road and traffic conditions. In such
cases, consult a qualified specialist work-
shop.
Declarations of conformity
Vehicle components which receive
and/or transmit radio waves
USA: "The wireless devices of this vehicle
comply with Part 15 of the FCC Rules. Opera-
tion is subject to the following two condi-
tions: 1) These devices may not cause harmful interference, and 2) These devices must
accept any interference received, including
interference that may cause undesired oper-
ation. Changes or modifications not
expressly approved by the party responsible for compliance could void the user’s author-
ity to operate the equipment."
Canada:
"The wireless devices of this vehicle
comply with Industry Canada license-exempt
RSS standard(s). Operation is subject to the
following two conditions: (1) These devices
may not cause interference, and (2) These
devices must accept any interference,
including interference that may cause unde-
sired operation of the device."
Diagnostics connection
The diagnostics connection is only intended
for the connection of diagnostic equipment
at a qualified specialist workshop.
GWARNING
If you connect equipment to the diagnostics
connection in the vehicle, it may affect the
operation of the vehicle systems. As a
result, the operating safety of the vehicle
could be affected. There is a risk of an
accident.
Do not connect any equipment to a diagnos-
tics connection in the vehicle.
GWARNING
Objects in the driver's footwell can
restrict the pedal travel or obstruct a
depressed pedal. The operating and road
safety of the vehicle is jeopardized. There
is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats securely and as specified in order to
ensure sufficient clearance for the pedals.
Do not use loose floormats and do not place
floormats on top of one another.
!If the engine is switched off and equip-
ment on the diagnostics connection is used,
the starter battery may discharge.
Connecting equipment to the diagnostics
connection can lead to emissions monitoring
information being reset, for example. This
may lead to the vehicle failing to meet the
>> Introduction.19
Z

requirements of the next emissions test dur-
ing the main inspection.
Qualified specialist workshop
A smart center is a qualified specialist
workshop. It has the necessary specialist
knowledge, tools and qualifications to cor-
rectly carry out the work required on your
vehicle. This is especially the case for work
relevant to safety.
Observe the notes in the Maintenance Book-
let.
Always have the following work carried out at
a smart center:
Rwork relevant to safety
Rservice and maintenance work
Rrepair work
Ralterations, installation work and modifi-
cations
Rwork on electronic components
Correct use
If you remove any warning stickers, you or
others could fail to recognize certain dan-
gers. Leave warning stickers in position.
Observe the following information when
driving your vehicle:
Rthe safety notes in this manual
Rthe Technical Data section in this manual
Rtraffic rules and regulations
Rlaws and safety standards pertaining to
motor vehicles
Problems with your vehicle
If you should experience a problem with your
vehicle, particularly one that you believe
may affect its safe operation, we urge you to
immediately contact an authorized smart
center to have the problem diagnosed and
corrected if required. Do not drive the vehi-
cle if you believe it may not be safely oper-
ated. If the matter is not handled to your sat-
isfaction, please discuss the problem with
the smart center management, or if necessarycontact us at one of the following addresses:
In the USA Mercedes-Benz USA, LLC
One Mercedes Drive
Montvale, NJ 07645
In Canada
Customer Relations Department
98 Vanderhoof Avenue
Mercedes-Benz Canada, Inc.
Toronto, Ontario M4G 4C9
QR codes for rescue card
The QR codes are secured in the fuel filler
flap and on the opposite side on the B-pillar.
In the event of an accident, rescue services
can use the QR code to quickly find the appro-
priate rescue card for your vehicle. The cur-
rent rescue card contains the most important
information about your vehicle in a compact
form, e.g. the routing of the electric cables.
You can find more information under http://
portal.aftersales.i.daimler.com/public/
content/asportal/en/communication/
informationen_fuer/QRCode.html.
Data stored in the vehicle
Data recording
This vehicle is capable of recording diag-
nostic information relating to vehicle oper-
ation, malfunctions, and user settings. This
may include information about the perform-
ance or status of various systems, including
but not limited to, engine, throttle, steering
or brake systems, that is stored and can be
read out with suitable devices, particularly
when the vehicle is serviced. The data
obtained is used to properly diagnose and
service your vehicle or to further optimize
and develop vehicle functions.
Event data recorders
This vehicle is equipped with an event data
recorder (EDR). The main purpose of an EDR is
to record data that will assist in understand-
ing how a vehicle’s systems performed in cer-
tain crash or near crash-like situations, such
as during air bag deployment or when hitting
a road obstacle. The EDR is designed to record
20>> 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.

Also make sure that there are no objects,
e.g. cushions, between the occupant and the
seat.
Seat belts are solely intended for the pro-
tection and restraint of the vehicle occu-
pants. To secure objects, luggage or loads,
always observe the "Loading guidelines"
(
Ypage 142).
Fastening seat belts
Observe the safety notes on the seat belt
(Ypage 31) and the notes on correct use of seat
belts (Ypage 32).
For easy fastening, the seat belt passes
through a belt loop on the side of the seat.
Basic illustration
XAdjust the seat (Ypage 61).
The seat backrest must be in an almost ver-
tical position.
XPull the seat belt smoothly from belt outlet
0087 and engage belt tongue 0044into belt
buckle 0043.
XIf necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
In order to attach the child restraint system
securely in the vehicle, the seat belt on the
front-passenger seat is equipped with a spe- cial seat belt retractor. Further information
on the "Special seat belt retractor"
(
Ypage 43).
Releasing seat belts
!Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door, the
door trim panel and the seat belt. Damaged seat belts can no longer fulfill their pro-
tective function and must be replaced.
Visit a qualified specialist workshop.
XPress the release button in the belt buckle,
hold the belt tongue firmly and guide the
belt back.
Belt warning for the driver and front
passenger
The 0076 seat belt warning lamp in the
instrument cluster is a reminder that all
vehicle occupants must wear their seat belts.
It may light up continuously or flash. In addi-
tion, there may be a warning tone.
Regardless of whether the driver's seat belt
has already been fastened, the 0076seat belt
warning lamp lights up for six seconds each
time the engine is started. If the driver's or
front-passenger seat belt has not been fas-
tened, the 0076seat belt warning lamp starts
to light up continuously after these
six seconds. As soon as the driver and front
passenger fasten their seat belts, the 0076
seat belt warning lamp goes out.
If the driver's seat belt is not fastened after
the engine is started, an additional warning
tone will sound. The warning tone switches off
after six seconds or once the driver's seat
belt is fastened.
If the vehicle speed exceeds 12 mph (20 km/h)
and the driver's or front-passenger seat belt
is not fastened, a warning tone sounds again.
The warning tone sounds with increasing
intensity for a maximum of 120 seconds or
until the driver or front passenger have fas-
tened their seat belts.
If the driver or front passenger unfasten
their seat belts during the journey, the seat
belt warning is activated again.
Occupant safety33
>> Safety.
Z

Air bags
Introduction
The air bag installation point is identified
by the label AIR BAG.
An air bag supplements a correctly fastened
seat belt. However, it is not intended as a
substitute for the seat belt. Air bags provide
additional protection in the event of an acci- dent.
Not all air bags are deployed in an accident.
The various air bag systems work independ-
ently of each other (
Ypage 40).
There is, however, no system available today
that can completely rule out injury or death.
It is also not possible to rule out a risk of
injury caused by an air bag due to the high
speed at which the air bag must be deployed.
Important safety notes
GWARNING
If you do not sit in the correct seat posi-
tion, the air bag cannot protect as intended
and could even cause additional injury
when deployed. This poses an increased
risk of injury or even fatal injury.
To avoid hazardous situations, always make
sure that all of the vehicle's occupants:
Rhave fastened their seat belts correctly,
including pregnant women
Rare sitting correctly and maintain the
greatest possible distance to the air
bags
Rfollow the following instructions
Always make sure that there are no objects
between the air bag and the vehicle's occu- pants.
RAdjust the seats properly before beginning
your journey. Always make sure that the seatis in an almost upright position.
RMove the driver's and front-passenger
seats as far back as possible. The driver's
seat position must allow the vehicle to be
driven safely.
ROnly hold the steering wheel on the outside.This allows the air bag to be fully deployed.
RAlways lean against the backrest while
driving. Do not lean forwards or lean
against the door or side window. You may
otherwise be in the deployment area of the
air bags.
RAlways keep your feet in the footwell in
front of the seat. Do not put your feet on the
dashboard, for example. Your feet may oth-
erwise be in the deployment area of the air
bag.
RFor this reason, always secure persons lessthan 5 ft (1.50 m) tall in suitable restraint
systems. Up to this height, the seat belt
cannot be worn correctly.
If a child is traveling in your vehicle, also
observe the following notes:
RAlways secure children under twelve years
of age and less than 5 ft (1.50 m) tall in
suitable child restraint systems.
ROnly secure a child in a rearward-facing
child restraint system on the front-
passenger seat when the front-passenger
front air bag is deactivated. If the
PASSENGER AIR BAG OFF indicator lamp is
permanently lit, the front-passenger front air bag is deactivated (
Ypage 30).
RAlways observe the instructions and safety
notes on the "Occupant Classification Sys-
tem (OCS)" (
Ypage 36) and on "Children in
the vehicle" (Ypage 42) in addition to the
child restraint system manufacturer's
installation and operating instructions.
Objects in the vehicle interior may prevent
an air bag from functioning correctly. Before
starting your journey and to avoid risks
resulting from the speed of the air bag as it
deploys, make sure that:
Rthere are no people, animals or objects
between the vehicle occupants and an air
bag.
Rthere are no objects between the seat, door and B-pillar.
Rno hard objects, e.g. coat hangers, hang on
the grab handles or coat hooks.
Rno accessories, such as cup holders, are
attached to the vehicle within the deploy-
ment area of an air bag, e.g. to doors or side
windows.
Rno heavy, sharp-edged or fragile objects
are in the pockets of your clothing. Store
such objects in a suitable place.
34Occupant safety
>> Safety.

facing child restraint system must lie as flat
as possible against the backrest of the front-
passenger seat.
The child restraint system must not touch the
roof. Adjust the backrest angle accordingly.
Only then can OCS be guaranteed to function
correctly. Always observe the child restraint
system manufacturer's installation instruc-
tions.
How the occupant classification system
(OCS) operates
0043PASSENGER AIR BAG OFF indicator lamp
0044PASSENGER AIR BAG ON indicator lamp
The indicator lamps indicate whether the
front-passenger front air bag is activated or
deactivated.
XTurn the key to position 1or 2in the igni-
tion lock.
The system carries out a self-diagnosis
test.
The PASSENGER AIR BAG OFF and PASSENGER
AIR BAG ON indicator lamps must light up
simultaneously for about six seconds.
The indicator lamps then display the status of
the front-passenger front air bag:
RPASSENGER AIRBAG ON lights up: the front-
passenger front airbag is enabled. If, in
the case of an accident, all deployment cri-
teria are met, the front-passenger front
air bag is deployed.
RPASSENGER AIRBAG OFF lights up: the front-
passenger front airbag is disabled. It will then not be deployed in the event of an
accident.
Always observe the PASSENGER AIR BAG ON and
PASSENGER AIR BAG OFF indicator lamps when
the front-passenger seat is occupied. Make
sure that the status of the front-passenger front air bag is correct before and during a
journey.
GWARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air
bag is disabled. It will not be deployed in
the event of an accident and cannot perform
its intended protective function. A person
in the front-passenger seat could then, for
example, come into contact with the vehi-
cle's interior, especially if the person is
sitting too close to the dashboard. This
poses an increased risk of injury or even
fatal injury.
When the front-passenger seat is occupied, always ensure that:
Rthe classification of the person in the
front-passenger seat is correct and the
front-passenger front air bag is enabledor disabled in accordance with the per-
son in the front-passenger seat
Rthe front-passenger seat has been movedback as far back as possible.
Rthe person is seated correctly.
Make sure, both before and during the jour-
ney, that the status of the front-passenger
front air bag is correct.
GWARNING
If you secure a child in a rearward-facing
child restraint system on the front-
passenger seat and the PASSENGER AIR BAG
ON indicator lamp is lit up, the front-
passenger front air bag may deploy in an
accident. The child could be struck by the
air bag. This poses an increased risk of
injury or even fatal injury.
Make sure that the front-passenger front
air bag has been disabled. The PASSENGER
AIR BAG OFF indicator lamp must be lit.
If the PASSENGER AIR BAG OFF indicator lamp
remains off and/or the PASSENGER AIR BAG ON
indicator lamp is lit, do not fit a rearward-
facing child restraint system to the front-
passenger seat. For more information, see
Occupant safety37
>> Safety.
Z

"Problems with the Occupant Classification
System (OCS)" (Ypage 40).
GWARNING
If you secure a child in a forward-facing
child restraint system on the front-
passenger seat and you position the front-
passenger seat too close to the dashboard,
in the event of an accident, the child could:
Rcome into contact with the vehicle's
interior if the PASSENGER AIR BAG OFF
indicator lamp is lit, for example
Rbe struck by the air bag if the PASSENGER
AIR BAG ON is lit up
This poses an increased risk of injury or
even fatal injury.
Move the front-passenger seat as far back
as possible. Always make sure that the
shoulder belt strap is correctly routed
from the vehicle belt guide to the shoulder
belt guide on the child restraint system.
The shoulder belt strap must be routed for-
wards and downwards from the belt guide.
Always observe the child restraint system
manufacturer's installation instructions.
If OCS detects that:
Rthe front-passenger seat is not occupied,
the PASSENGER AIR BAG OFF indicator lamp
lights up continuously after the system's
self-diagnosis test. This indicates that
the front-passenger front air bag is deac-
tivated.
Rthe front-passenger seat is occupied by a
child aged up to twelve months in a stand-
ard child restraint system, the PASSENGER
AIR BAG OFF indicator lamp lights up con-
tinuously after the system's self-diagnosis
test. This indicates that the front-
passenger front air bag is deactivated.
In the case of a twelve-month-old child in a
standard child restraint system, the
PASSENGER AIR BAG ON indicator lamp may
light up continuously after the system's
self-diagnosis test. This indicates that
the front-passenger front air bag is acti-
vated. Categorization is dependent on the
type of child restraint system and the stat-
ure of the child, for example. Make sure
that the prerequisites for correct catego- rizat
ion have been met. If the PASSENGER
AIR BAG ON indicator lamp remains lit, do
not install a child restraint system on the
front-passenger seat.
Rthe front-passenger seat is occupied by a
person of smaller stature (e.g. a teenager
or a small adult), either the PASSENGER AIR
BAG ON or PASSENGER AIR BAG OFF indicator
lamp lights up continuously after the sys-
tem's self-diagnosis test depending on the categorization.
-If the PASSENGER AIR BAG ON indicator
lamp is lit, position the front-
passenger seat as far back as possible.
-If the PASSENGER AIR BAG OFF indicator
lamp lights up, a person of smaller stat-
ure should not sit on the front-passenger
seat.
Rthe front-passenger seat is occupied by an
adult or a person of an appropriate size,
the PASSENGER AIR BAG ON indicator lamp
lights up continuously after the system's
self-diagnosis test. This indicates that
the front-passenger front air bag is acti-
vated.
If children are traveling in the vehicle, be
sure to observe the notes on "Children in the
vehicle" (
Ypage 42).
If the OCS is malfunctioning, both the red
0075 restraint system warning lamp in the
instrument cluster and the PASSENGER AIR
BAG OFF indicator lamp light up simultane-
ously. In this case, the front-passenger air
bag is deactivated and does not deploy during
an accident. Have the system checked by
qualified technicians as soon as possible.
Consult a smart center. Only have the front-
passenger seat repaired at a smart center.
If the front-passenger seat, the seat cover or
the seat cushion are damaged, have the nec-
essary repair work carried out at a smart cen-
ter.
For safety reasons, smart recommends that you only use seat accessories which have been
approved by smart.
If the driver's air bag deploys , this does not
mean that the front-passenger front air bag
will also deploy. The Occupant Classifica-
tion System (OCS) categorizes the occupant on
the front-passenger seat. Depending on the
result, the front-passenger air bag is acti-
vated or deactivated.
38Occupant 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.