SMART FORTWO COUPE 2012 Service Manual

Thorax-pelvis side air bags are deployed
R
on the impacted side of the vehicle
R in instances with a high rate of lateral
vehicle deceleration or acceleration
R independently of the front air bags
R regardless
of whether the seat belt on the
impacted side of the vehicle is in use
R independently of the ETDs.
Thorax-pelvis side air bags will generally
not deploy in a rollover.
The thorax-pelvis side air bags will
deploy, however, if the system detects
R a high rate of lateral vehicle
deceleration or acceleration, and
R that air bag deployment can offer
additional protection to that provided
by the seat belt.
The thorax-pelvis side air bags are
integrated into the driver and passenger
seat backrests. :
Thorax-pelvis side air bags Occupant Classification System
The Occupant Classification System (OCS)
automatically

turns the passenger front air
bag on or off based on the classified
occupant weight category determined by
weight sensor readings from the passenger
seat. i
Based on the classified occupant
weight category determined by weight
sensor

readings from the passenger seat,
the system does also deactivate
R head-thorax air bag (cabriolet)
R the window curtain air bag (coupé)
R the thorax-pelvis side air bag (coupé)
R the seat Emergency Tensioning
Devices
R the seat belt force limiter.
Occupants must sit properly belted in a
position that is as upright as possible with
their back against the seat backrest and
feet on the floor to be correctly classified.
If the occupant’s weight is transferred to
another object in the vehicle (e.g. by
leaning on armrests), the OCS may not be
able to properly approximate the
occupant’s weight category.
i If the seat, including the trim cover and
cushion, needs to be serviced in any way,
take the vehicle to an authorized smart
center. Only seat accessories approved
by smart may be used.
Both driver and the passenger should
always use the 4 0 indicator
lamp as an indication of whether or not
the passenger is properly positioned
(Y page 41). G
WARNING
If the 4 0 indicator lamp
illuminates when an adult or someone
larger than a small individual is in the
passenger seat, have the passenger re-
position himself or herself in the seat
until the 4 0 indicator lamp
goes out.
In the event of a collision, the air bag
control

unit will not allow passenger front
air bag deployment when the OCS has
classified the passenger seat occupant as
being up to or less than the weight of a
typical 12‑month‑old child in a standard Occupant safety
39
>> Safety.
Z

child restraint, or if the passenger seat is
sensed as being empty.
When
the OCS senses that the passenger seat
occupant is classified as being up to or
less than the weight of a typical
12‑month‑old child in a standard child
restraint, the 4 0 indicator
lamp will illuminate when the ignition is
switched on and remain illuminated,
indicating that the passenger front air bag
is deactivated.
When the OCS senses that the passenger seat
is classified as being empty, the
4 0 indicator lamp will
illuminate and remains illuminated.
When the OCS senses that the passenger seat
occupant is classified as being heavier
than the weight of a typical 12‑month‑old
child seated in a standard child restraint
or as being a small individual (such as a
young teenager or a small adult), the
4 0 indicator lamp will
illuminate for approximately 4 seconds
when the ignition is switched on and then,
depending on occupant weight sensor
readings from the seat, remains
illuminated or goes out.
When the 4 0 indicator lamp is
illuminated, the passenger front air bag is
deactivated.
When the 4 0 indicator lamp is
out and the passenger seat is occupied by
an adult or someone larger than a small
individual, the passenger front air bag is
activated.
When the OCS senses that the passenger seat
occupant is classified as an adult or
someone larger than a small individual, the
4 0 indicator lamp will
illuminate for approximately 4 seconds
when the ignition is switched on and then
goes out, indicating that the passenger
front air bag is activated.
If the 4 0 indicator lamp is
illuminated, the passenger front air bag is
deactivated and will not be deployed. If the
4 0 indicator lamp is not
illuminated, the passenger front air bag is
activated and will be deployed
R in the event of certain frontal impacts
R if impact exceeds a preset deployment
threshold
R independently of the head-thorax air
bags
If the passenger front air bag is deployed,
the rate of inflation will be influenced by
R the rate of vehicle deceleration and a
fastened or unfastened seat belt as
assessed by the air bag control unit
R the passenger’s weight category as
identified by the OCS G
WARNING
Children 12 years old and under must be
seated and properly secured in an
appropriate infant or child restraint
recommended

for the size and weight of the
child.
The infant or child restraint must be
properly secured with the vehicle’s seat
belt, fully in accordance with the child
seat manufacturer’s instructions.
Children can be killed or seriously injured
by an inflating air bag. Note the following
important information:
R Your vehicle is equipped with air bag
technology designed to turn off the
passenger front air bag in your vehicle
when the system senses the weight of a
typical 12‑month‑old child or less along
with the weight of a standard
appropriate child restraint on the
passenger seat.
R A child in a rear-facing child restraint
on the passenger seat will be seriously
injured or even killed if the passenger
front air bag inflates in a collision
which could occur under some
circumstances, even with the air bag
technology installed in your vehicle. 40
Occupant safety
>> Safety.

R
If you install a rear-facing child
restraint on the passenger seat, make
sure the 4 0 indicator lamp
is illuminated, indicating that the
passenger front air bag is deactivated.
Should the 4 0 indicator
lamp not illuminate or go out while the
restraint is installed, please check
installation.
Periodically check the 4 0
indicator lamp while driving to make
sure the 4 0 indicator lamp
is illuminated.
If the 4 0 indicator lamp
goes
out or remains out, do not transport
a child on the passenger seat until the
system has been repaired.
A child in a rear-facing child restraint
on the passenger seat may be seriously
injured or even killed if the passenger
front air bag inflates.
R If you place a child in a forward-facing
child restraint on the passenger seat,
move the seat as far back as possible, use
the proper child restraint recommended
for the age, size and weight of the child
by the seat manufacturer, and secure
child restraint with the vehicle’s seat
belt according to the child seat
manufacturer’s instructions. For
children larger than the typical
12‑month‑old child, the passenger front
air bag may or may not be activated.
i Deployment of the driver front air bag
does not mean that the passenger front
air bag also should have deployed.
The Occupant Classification System may
have determined
R that the seat was empty or occupied by the
weight up to or less than that of a typical
12‑month‑old child seated in a standard
child restraint — both instances where
the system suppresses deployment of the
passenger front air bag even though the
impact met the criteria and was of sufficient severity to deploy the driver
front air bag
R that the seat was occupied by a small
individual (such as a young teenager or
a small adult) or a child weighing more
than
the weight of a typical 12‑month‑old
child in a standard child restraint —
instances where the system may suppress
deployment of the passenger front air
bag even though the impact met the
criteria and was of sufficient severity
to deploy the driver front air bag
Passenger front air bag off indicator
lamp The indicator lamp is located on the
overhead control panel.
Passenger front air bag off indicator
lamp : illuminates when the passenger
front air bag is deactivated.
G
WARNING
When the SRS indicator lamp 6 and the
4 0 indicator lamp are lit at
the

same time, there is a malfunction in the
Occupant Classification System.
In order to ensure proper operation of the
air bag system and OCS:
R Have the system checked as soon as
possible by qualified technicians.
Contact an authorized smart center.
R Sit properly belted in a position that is
as upright as possible with your back
against the seat backrest. Occupant safety
41
>> Safety.
Z

R
Do not lean on the armrests or lift
yourself
from the seat by using the handle
over the door as this may cause the OCS to
be unable to correctly approximate the
occupant weight category.
R Only have the seat repaired or replaced
by an authorized smart center.
R Read and observe all warnings in this
chapter.
Self-test Occupant Classification
System After turning the key in the starter switch
to position
1 or 2, the 4 0
indicator lamp located in the center
console illuminates. If an adult occupant
is properly sitting on the passenger seat
and

the system senses the occupant as being
an adult, the 4 0 indicator
lamp will illuminate and go out after
approximately 4 seconds.
If the seat is not occupied and the system
senses the passenger seat as being empty,
the 4 0 indicator lamp will
illuminate and not go out. G
WARNING
If the 4 0 indicator lamp does
not illuminate immediately after starting
the engine, the system is not functioning.
You

must contact an authorized smart center
before seating any child on the passenger
seat.
More information can be found in the
“Practical hints” section ( Y page 173).G
WARNING
Never place anything between seat cushion
and child seat (e.g. pillow), since it
reduces the effectiveness of the Occupant
Classification System. The bottom of the
child seat must make full contact with the
passenger seat cushion. An incorrectly
mounted

child seat could cause injuries to the child in case of an accident, instead of
increasing protection for the child.
Follow the manufacturer’s instructions for
installation of child seats.
Children in the vehicle
If an infant or child is traveling with you
in the vehicle:
X Secure the child using an infant or child
restraint

appropriate to the age and size
of the child.
X Make sure the infant or child is properly
secured

at all times while the vehicle is
in motion. G
WARNING
Do not leave children unattended in the
vehicle,
even if they are secured in a child
restraint system. The children could
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or
cold
Do not expose the child restraint system to
direct sunlight. The child restraint
system’s metal parts, for example, could
become very hot, and the child could be
burned on these parts.
If children open a door, they could
R injure other persons
R get out of the vehicle and injure
themselves or be injured by following
traffic
Do not carry heavy or hard objects in the
passenger compartment unless they are
firmly secured in place.
For more information, please refer to the
“Loading and storing section”. 42
Occupant safety
>> Safety.

Unsecured or improperly positioned cargo
increases a child’s risk of injury in the
event of
R
strong braking maneuvers
R sudden changes of direction
R an accident
Infant and child restraint system We recommend all infants and children be
properly restrained at all times while the
vehicle is in operation.
The passenger lap-shoulder belt has a
special seat belt retractor for secure
fastening of child restraints.
To fasten a child restraint, follow all
mounting instructions provided by the
child
restraint manufacturer. Then pull the
shoulder seat belt out completely and let it
retract. During seat belt retraction, a
ratcheting sound can be heard to indicate
that the special seat belt retractor is
activated. The seat belt is now locked. Push
down on child restraint to take up any
slack.
To deactivate, release seat belt buckle and
let seat belt retract completely. To
deactivate the special seat belt retractor
for the passenger seat, the passenger seat
must be in the most backward position. The
seat belt can again be used in the usual
manner. G
WARNING
Never release the seat belt buckle while the
vehicle
is in motion, since the special seat
belt retractor will be deactivated.
The use of infant or child restraints is
required by law in all 50 states, the
District of Columbia, the U.S. territories,
and all Canadian provinces and
territories.
Infants and small children should be seated
in an appropriate infant or child restraint
system properly secured in accordance
with the manufacturer’s instructions for the child restraint, that complies with U.S.
Federal

Motor Vehicle Safety Standards 213
and 225 and Canadian Motor Vehicle Safety
Standards 213, 213.1 and 213.2.
A statement by the child restraint
manufacturer of compliance with these
standards can be found on the instruction
label on the restraint and in the
instruction manual provided with the
restraint.
When using any infant restraint, toddler
restraint, or booster seat be sure to
carefully read and follow all
manufacturer’s instructions for
installation and use.
Please read and observe warning labels
affixed to the inside of the vehicle and to
infant or child restraints. G
WARNING
Children 12 years old and under must be
seated and properly secured in an
appropriately sized infant restraint,
toddler restraint, or booster seat
recommended

for the size and weight of the
child.
The infant or child restraint must be
properly secured with the vehicle’s seat
belt fully in accordance with the child seat
manufacturer’s instructions.
Occupants, especially children, should
never place their bodies or lean their
heads in the area of the door where the
head-thorax air bags (cabriolet), window
curtain air bags (coupé) and thorax-pelvis
air bags (coupé) inflates. This could result
in serious injuries or death should the
head-thorax air bags (cabriolet), window
curtain air bags (coupé) and thorax-pelvis
air bags (coupé) be triggered. Always sit as
upright as possible, properly use the seat
belt and use an appropriately sized infant
restraint, toddler restraint, or booster
seat recommended for the size and weight
of the child.
Children can be killed or seriously injured
by an inflating air bag. Note the following Occupant safety
43
>> Safety.
Z

important information when circumstances
require you to place a child in the
passenger seat:
R
Your vehicle is equipped with air bag
technology designed to turn off the
passenger front air bag in your vehicle
when
the Occupant Classification System
senses the weight of a typical
12‑month‑old child or less along with the
weight of an appropriate child restraint
on the passenger seat.
R A child in a rear-facing child restraint
on the passenger seat may be seriously
injured or even killed if the passenger
front air bag inflates in a collision.
R If you install a rear-facing child
restraint on the passenger seat, make
sure the 4 0 indicator lamp
is illuminated, indicating that the
passenger front air bag is deactivated.
Should the 4 0 indicator
lamp not illuminate or go out while the
restraint is installed, please check
installation. Periodically check the
4 0 indicator lamp while
driving to make sure the
4 0 indicator lamp is
illuminated. If the 4 0
indicator lamp goes out or remains out,
do not transport a child on the passenger
seat until the system has been repaired.
A child in a rear-facing child restraint
on the passenger seat may be seriously
injured or even killed if the passenger
front air bag inflates.
R If you place a child in a forward-facing
child restraint on the passenger seat,
move the seat as far back as possible, use
a proper child restraint recommended
for the age, size and weight of the child,
and secure child restraint with the
vehicle’s seat belt according to the child
seat manufacturer’s instructions. For
children larger than the typical
12‑month‑old child, the passenger front
air bag may or may not be activated. G
WARNING
Infants and small children should never
share a seat belt with another occupant.
During an accident, they could be crushed
between the occupant and seat belt.
A child’s risk of serious or fatal injuries
is significantly increased if the child
restraints are not properly secured in the
vehicle and/or the child is not properly
secured in the child restraint.
Children too big for a toddler restraint
must

ride in a seat using regular seat belt.
Position shoulder belt across chest and
shoulder, not face or neck. A booster seat
may be necessary to achieve proper seat
belt positioning for children over 41 lbs
until they reach a height where a lap-
shoulder belt fits properly without a
booster.
When the child restraint is not in use,
remove it from the vehicle or secure it with
the seat belt to prevent the child restraint
from becoming a projectile in the event of
an accident.
Do not leave children unattended in the
vehicle, even if the children are secured in
a child restraint system. Unsupervised
children in a child restraint system may
use vehicle equipment and may cause an
accident and/or serious personal injury.
If you are using a rear-facing child
restraint system on the passenger seat, you
must verify that the passenger front air bag
is deactivated. When the passenger front
air bag is deactivated, the
4 0 indicator lamp is
illuminated (Y page 41).
Top tether
Top tether permits an additional
connection between a child restraint
system and the passenger seat. Proper
usage of the top tether, in accordance with
instructions provided by the child
restraint manufacturer, can further reduce
the risk of injuries. 44
Occupant safety
>> Safety.

The top tether anchorage is located on the
floor of the cargo compartment. The top
tether guide for the top tether strap is
located above, on the head restraint.
X
Thread top tether strap A through top
tether guide : down the back of
passenger seat ; to top tether
anchorage =.
X Attach top tether hook ? to top tether
anchorage = on the floor of the cargo
compartment.
i If you are using divider plus*, the
hooks of the top tether and the divider
plus*
are attached to the same anchorage.
X Install the child restraint system and
tighten top tether strap A according to
the child restraint manufacturer’s
instructions. G
WARNING
After installing top tether straps, make
sure the seat backrests are in an upright
position

and are properly locked. Push and pull on the seat backrests to ensure they are
properly

secured in the locked position. If
a seat backrest is not properly locked, the
seat backrest could fold. The child seat
would no longer be properly supported or
positioned to provide its intended
benefit. That could cause serious or even
fatal injuries. Panic alarm
X
Activating: Press and hold button : for
at least 1 second.
An audible alarm and flashing exterior
lamps will operate briefly.
X Deactivating:
Press button : once more.
or
X Insert the key in the starter switch.
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any
interference received, including
interference that may cause undesired
operation.
Any unauthorized modification to this
device

could void the user’s authority to
operate the equipment. Panic alarm
45
>> Safety.
* optional Z

The product label with FCC ID and IC
certification
number can be found in the
battery case.
i Canada only:
This device complies with RSS‑210 of
Industry Canada. Operation is subject to
the following two conditions:
1. This device may not cause
interference, and
2. this device must accept any
interference received, including
interference that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
The product label with FCC ID and IC
certification number can be found in the
battery case. Driving safety systems
Introduction
G
WARNING
The following factors increase the risk of
accidents:
R Excessive speed, especially in turns
R Wet and slippery road surfaces
R Following another vehicle too closely
The driving safety systems described in
this section cannot reduce these risks or
prevent the natural laws of physics from
acting on the vehicle.
Always adapt your driving style to the
prevailing road and weather and traffic
conditions and keep a safe distance to
other road users and objects on the street.
i In winter operation, the maximum
effectiveness of the ABS, the hydraulic
brake assistant, and the ESP ®
is only
achieved with winter tires ( Y page 142)
or snow chains* as required. Antilock Brake System (ABS)
G
WARNING
Do not pump the brake pedal. Use firm,
steady brake pedal pressure instead.
Pumping the brake pedal defeats the
purpose of the ABS and significantly
reduces braking effectiveness.
The Antilock Brake System (ABS) regulates
the

brake pressure so that the wheels do not
lock during braking. This allows you to
maintain the ability to steer your vehicle.
On slippery road surfaces, the ABS will
respond even to light brake pressure.
The ABS indicator lamp in the instrument
cluster (Y page 22) comes on when you
switch on the ignition. It goes out when the
engine is running.
Braking At the instant one of the wheels is about to
lock up, a slight pulsation can be felt in
the

brake pedal, indicating that the ABS is
regulating the brake pressure.
X Keep firm and steady pressure on the
brake pedal while experiencing the
pulsation.
Continuous, steady brake pedal pressure
yields
the advantages provided by the ABS,
namely braking power and the ability to
steer the vehicle.
A pulsating brake pedal can be an
indication of hazardous road conditions
and functions as a reminder to take extra
care while driving.
Emergency brake maneuver X
Keep continuous full pressure on the
brake pedal. G
WARNING
When the ABS is malfunctioning, the
hydraulic brake assistant and the ESP ®
are
also switched off. 46
Driving safety systems
>> Safety.
* optional

When the ABS is malfunctioning, the wheels
may lock during hard braking, reducing
steering capability and extending the
braking distance.
G
WARNING
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking or steering efficiency
beyond that afforded by the condition of the
vehicle brakes and tires or the traction
afforded. The ABS cannot prevent
accidents, including those resulting from
excessive speed in turns, following
another vehicle too closely, or
hydroplaning. Only a safe, attentive, and
skillful driver can prevent accidents. The
capabilities of an ABS equipped vehicle
must never be exploited in a reckless or
dangerous manner which could jeopardize
the user’s safety or the safety of others. Electronic Stability Program (ESP
®
)
Your vehicle is equipped with the
Electronic Stability Program (ESP®
). The
ESP ®
is operational as soon as the engine
is running and it monitors the vehicle’s
traction (force of adhesive friction
between

the tires and the road surface) and
handling.
The ESP ®
recognizes when a wheel is
spinning or if the vehicle starts to skid.
By applying brakes to the appropriate
wheel and by limiting the engine output,
the ESP ®
works to stabilize the vehicle. The
ESP ®
is especially useful while driving off
and on wet or slippery road surfaces. The
ESP ®
also stabilizes the vehicle during
braking and steering maneuvers.
The ESP ®
warning lamp ÷ in the
instrument cluster flashes when the ESP ®
is
engaged.
The ESP ®
warning lamp ÷ in the
instrument cluster comes on when you switch on the ignition. It goes out when the
engine is running.
Depending on the driving situation, the
ESP
®
R reduces the speed
R selectively brakes individual wheels
R equalizes

the speed of the driven wheels
R stabilizes the vehicle when braking
R assists you in evasive maneuvers on all
roads G
WARNING
If the ESP ®
warning lamp ÷ in the
instrument cluster flashes, proceed as
follows:
R While driving off, apply as little
throttle as possible.
R While

driving, ease up on the accelerator
pedal.
R Adapt your speed and driving style to the
prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The ESP ®
cannot prevent accidents
resulting from excessive speed. G
WARNING
The ESP ®

cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded. The
ESP ®
cannot prevent accidents, including
those resulting from excessive speed in
turns, or hydroplaning. Only a safe,
attentive, and skillful driver can prevent
accidents. The capabilities of an ESP ®
equipped vehicle must never be exploited
in a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others.
! Because the ESP ®
operates
automatically, the engine must be turned
off (ignition switched off) when the
parking brake is being tested on a brake
test dynamometer. Active braking action Driving safety systems
47
>> Safety. Z

through the ESP
®
may otherwise seriously
damage the brake system which is not
covered by the smart Limited Warranty.
i The ESP ®
will only function properly if
you use wheels of the recommended tire
size (Y page 217). Hydraulic brake assistant
The hydraulic brake assistant operates in
emergency situations. If you apply the
brakes very quickly, the hydraulic brake
assistant automatically provides full
brake boost, thereby potentially reducing
the braking distance.
X Apply continuous full braking pressure
until

the emergency braking situation is
over.
The ABS will prevent the wheels from
locking.
When you release the brake pedal, the
brakes function again as normal. The
hydraulic brake assistant is then
deactivated. G
WARNING
When the hydraulic brake assistant is
malfunctioning, the brake system is still
functioning normally, but without the
additional

brake boost that would normally
be provided during an emergency braking
maneuver. Therefore, the braking distance
may increase. G
WARNING
The hydraulic brake assistant cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase
braking

efficiency beyond that afforded by
the condition of the vehicle brakes and
tires or the traction afforded. The
hydraulic brake assistant cannot prevent
accidents, including those resulting from
excessive speed in turns, following
another vehicle too closely, or
hydroplaning. Only a safe, attentive, and skillful driver can prevent accidents. The
capabilities

of a hydraulic brake assistant
equipped vehicle must never be exploited
in a reckless or dangerous manner which
could jeopardize the user’s safety or the
safety of others. Activating the hazard warning flasher
after an emergency braking maneuver
If

you bring the vehicle to a complete stop
by strongly braking at a speed of more than
43 mph (70 km/h), the hazard warning
flasher comes on automatically as soon as
the vehicle is at a standstill. The hazard
warning flasher will remain on until it is
switched off using the hazard warning
flasher switch (Y page 69) or until the
speed of the vehicle has exceeded 6 mph
(10 km/h). Anti-theft systems
Electronic immobilizer
The electronic immobilizer prevents
unauthorized persons from starting your
vehicle.
When leaving the vehicle, always take the
key with you and lock the vehicle. The
engine can be started by anyone with a key
that is left inside the vehicle.
X Activating: Remove the key from the
starter switch.
X Deactivating: Insert the key in the
starter switch.
X Turn the key to starter switch position 1. Anti-theft warning system*
Once the anti-theft warning system has
been armed, a visual and audible alarm is
triggered when
R someone opens a door or the tailgate
R someone enters the vehicle’s interior 48
Anti-theft systems>> Safety.
* optional