Smart roadster and smart roadster coupe. Instruction — part 14

Helpful hints 1013

Breakdown set*

쮿

Remove the stopper from the filler hose
and push the end of the hose onto the
tyre valve.

쮿

Hold the bottle with the filler hose
pointing downwards and squeeze it.

쮿

Press the entire contents of the bottle
into the tyre.

쮿

Pull the hose off the valve and remove
any residual sealant from the valve,
rim and/or tyre.

쮿

Screw the original valve insert (or the
replacement one if necessary) back
into the valve with the valve remover.

쮿

Fit the compressor's air hose
accurately onto the valve.

쮿

Plug the power connection into the 12
volt power socket.

쮿

Inflate the tyre to at least 1.8 bar
(maximum 2.5 bar).

>Note!
Do not run the electric compressor for
more than six minutes. If you do so, there
is a risk of overheating!

1014 Helpful hints

Breakdown set*

>Note!
If a pressure of 1.8 bar cannot be
generated, disconnect the compressor
from the wheel. Carefully drive the car
10 meters forward or backward to
distribute the tyre sealant in the tyre.
Inflate the tyre again.

쮿

Continue your journey immediately
after removing the compressor, so that
the tyre sealant is distributed evenly
around the tyre's interior and can seal
the damaged point.

쮿

After driving for about ten minutes,
check the pressure with the gauge on
the compressor.

>Important!
The compressor (yellow box) must be
placed back in the footrest right after
use, as it forms the footrest area for the
passenger.

Accident risk!
If the tyre pressure of 1.8 bar

cannot be achieved after five minutes,
the tyre is damaged too severely.
Do not drive any further! Air could
otherwise escape from the tyre. You
could cause an accident as a result.
Notify a qualified specialist
workshop, e.g. a smart center.

Accident risk!
Do not exceed a speed of 80 km/h

or 50 mph when you have repaired a tyre
with the tyre sealant.
The "max. 80 km/h" must be displayed
on the instrument panel within the
driver's field of view.
Your car's handling characteristics
may be impaired by the damaged tyre
even if it has been repaired using the
tyre sealant.

Accident risk!
If the tyre pressure has fallen

below 1.3 bar, the tyre is too badly
damaged.
Do not drive any further! Air could
otherwise escape from the tyre. You
could cause an accident as a result.
Notify a qualified specialist
workshop, e.g. a smart center.

Helpful hints 1015

Breakdown set*

>Note!
If the pressure has fallen below 1.3 bar,
do not continue your journey. If the
pressure exceeds 1.3 bar, increase the
tyre pressure to the level indicated in
the car's operating instructions using
the compressor. Carefully drive to the
next qualified specialist workshop,
e.g. a smart center.

>Note!
The manufacturer is unable to guarantee
that all tyre punctures can be repaired
with the breakdown set, in particular
cuts or perforations with a diameter of
more than 4 mm (1/8 in) or away from the
tyre's tread. The manufacturer is not
liable for damage sustained through
improper use of the breakdown kit.

1016 Helpful hints

Wheel theft protection*

Wheel theft protection*

Caution!
Do not use impact wrenches. Store the
security key in a suitable place in the
car.

Caution!
For safety reasons, do not fit any hub caps
or covers when fitting antitheft devices
to steel wheels.

>Note!
In the event of the security key being
lost, please contact a smart center,
presenting the code card for your key.
Keep the code card for your key in a safe
place.

Fitting the wheel antitheft devices.

쮿

Remove one wheel stud from each wheel.

쮿

Turn the antitheft stud (1) with the
attached security key (2) and tighten
with a torque wrench.
> Tightening torque: 120 Nm

Accident risk!
The antitheft wheel studs must

be retightened with a torque spanner
between 100 and 500 kilometres (see
Tightening torque). Otherwise the
studs could become loose and endanger
yourself and other road users.

Helpful hints 1017

Tyres and wheels

Tyres and wheels

General information
In the interests of safety, smart gmbh
recommends that you use tyres that it has
specially approved for your car. These
tyres have been chosen to suit control
systems such as abs and esp. If you use
other tyres, smart gmbh is unable to
accept any responsibility for damage
resulting from their use. Information on
tyres is available from any qualified
specialist workshop, e.g. a smart center.

If you use tyres other than those
tested and recommended by smart gmbh,
their characteristics such as road
behaviour, noise and wear rate etc. could
be poorer.
Dimensional deviations and a change in
the way the tyres are compressed under
load during operation could in addition
cause them to rub against the body or axle
components. This could result in damage
to the tyre or vehicle.

smart gmbh neither tests nor recommends
the use of retreaded tyres. The
preliminary stages of damage cannot
always be detected on tyres that are
being retreated. smart gmbh is therefore
unable to guarantee driving safety with
retreaded tyres.

Modifications to the brake system and
wheels and the use of spacer and brake
dust rings are not permissible. In both
cases the vehicle's operating approval
will be nullified.

Accident risk!
Use only the tyre types, tyre sizes

and wheel sizes that are approved for
your type of vehicle.
If you fit different wheels:
the wheel brakes or suspension

components could be damaged.

clearance between the wheels and

tyres is no longer assured.

1018 Helpful hints

Tyres and wheels

Please note in particular:
Use only tyres and wheels of the same

type and make.

Fit only the correct type of tyre on each

wheel.

Where a car has the same size of wheel

at the front and rear, only switch tyres
between the front and rear axles (RF to
RR; LF to LR).

Fit new tyres on the rear wheels.
Break in new tyres at moderate speeds

for the first 100 kilometres.

Check tyres and wheels regularly for

damage. Damaged wheels could result
in a loss of pressure from and damage
to the tyres.

Do not use tyres with an excessively low

tread. Below a tread depth of
3 millimetres, grip will deteriorate
sharply on wet roads. Summer tyres
with a tread depth of 3 millimetres and
winter tyres with a tread depth of less
than 4 millimetres should therefore be
replaced without fail.

Change the tyres after no later than six

years, irrespective of the level of
wear. The same applies to the spare
wheel.

>Note!
Store tyres in a cool, dry and preferably
dark place when not fitted to the car.
Protect the tyres against oil, grease and
fuel. Never clean the tyres with high
pressure equipment. Your tyres could
otherwise be damaged.

Operating safety and roadworthiness
Tyres are a particularly important aspect
of the car's operating safety and
roadworthiness. For this reason, check
the tyre inflation pressure, tyre tread
and tyre condition at regular intervals.
A tyre specialist shop or a qualified
specialist workshop, such as a smart
center, will be able to supply further
information on
tyre load capacity (LI, load index),
speed index (maximum permitted

operating speed of a tyre),

tyre age,
the causes and consequences of tyre

wear,

measures to take in the event of tyre

damage,

tyre types for particular regions,

operating areas or operating
conditions of the vehicle.

scope for converting tyres, etc.

Helpful hints 1019

Tyres and wheels

Tyre condition
Check tyres at regular intervals, e.g. for:
external damage,
ageing,
foreign bodies in the tread,
cracks, bulges,
onesided or irregular tread wear.

Tyre tread
Do not undercut the minimum tread depth
of 3 millimetres (1/8 in) for summer tyres
and 4 millimetres (3/16 in) for winter
tyres.
Along with increasing tyre wear, the
tyres' grip and car's handling
characteristics deteriorate,
particularly on wet or snowcovered
roads. You should therefore change tyres
before they undercut the minimum tread
depth.
You should measure the tread depth with a
tread depth gauge, available from a
qualified specialist workshop such as a
smart center.

Wear indicators integrated into the edge
of the tread provide an additional visual
sign as to whether the tyres need to be
changed or not. These indicators,
however, do not form narrow, continuous
patterns until the depth of the remaining
tread to the base of the tread groove has
reached 1.6 millimetres (1/16 in). If you
can see this indicator, the tyre must be
replaced without delay.

Tyres continue to age even if they are
used little or not at all. The operating
safety and roadworthiness of all tyres
gradually decreases. You should
therefore replace tyres that were
manufactured more than six years ago.
The date of production is indicated in
the DOT number, which is displayed on
the side of every tyre. Since 2000, the
last two digits denote the tyre's year of
production, preceded by two digits
indicating the tyre's week of production
(WWYY).

Danger of injury!
Always make sure the tyre tread is

adequate. Too shallow a tyre tread will
reduce the tyres' grip considerably and
increase the risk of aquaplaning on wet
or slushy roads and at high speeds. The
tyre's tread will then no longer be able
to cut through the water. You could lose
control over your vehicle, cause an
accident and injure yourself or others.

Accident risk!
Note that cracks, bulges or

external damage could cause the tyre to
burst. You could lose control over your
vehicle as a result, cause an accident
and injure yourself or others. All tyres
exhibiting such defects should be
replaced without delay.

1020 Helpful hints

Tyres and wheels

Tyre damage
Tyre damage may be caused e.g. by:
the vehicle's operating conditions,
curbs,
foreign bodies,
inadequate tyre inflation pressure,
weather and environmental factors,

contact with oils, greases, fuels, etc.

Interchanging wheels

On cars with the same size of wheels all
round, depending on the level of wear you
can interchange the wheels every 5,000 to
10,000 kilometres (approx. 3,000 to 6,000
miles). Always keep a wheel's direction
of rotation the same.
The front and rear wheels will wear at
different rates, depending on the
operating conditions. Interchange the
wheels before a characteristic wear
pattern has become established on the
tyres.
Clean the contact surface of the wheels
and brake disc/inner side of the wheel
each time the wheels are changed. Check
the tyre inflation pressure.

Accident risk!
Driving over curbs or sharp

edged objects can cause damage to the
tyre's carcass that is not externally
visible. Damage to the tyre's carcass
will only become evident much later
and may result in tyre damage. You
could lose control over your vehicle as
a result and cause an accident which
could injure yourself or others.

Accident risk!
Never clean tyres with high

pressure equipment. This could lead to
tyre damage and failure. You could
consequently cause an accident or
injure other persons.

Accident risk!
Only interchange the front and

rear wheels if they are of the same
dimensions, e.g. rim size, wheel
offset.

Helpful hints 1021

Tyres and wheels

Changing a wheel

Accident risk!
Exceeding the quoted tyre load

capacity and the permissible speed
limit can result in tyre damage or tyre
failure. You could lose control over
your vehicle and cause an accident,
injuring yourself or others as a result.

For this reason, use only the tyre types,
tyre sizes and wheel sizes that are
approved for your type of vehicle.
Please note in particular the customer
specific approval regulations for
tyres.

These regulations may specify the use
of a particular tyre type for your car, or
prohibit the use of certain tyre types
that are permitted in other countries.

The use of a particular type of tyre may
moreover be recommended for certain
regions and areas of use.
Information on tyres is available from
a qualified specialist workshop, e.g. a
smart center.

Accident risk!
Have the tightening torque

checked by a qualified specialist
workshop after changing a wheel. smart
gmbh recommends that you visit a smart
center for this. It is particularly
important to have safetyrelevant work
and work on safetyrelevant systems
performed by a qualified specialist
workshop. The wheels could otherwise
work loose if they are not tightened to
a torque of 120 Nm. For safety reasons,
use only the correct wheel studs
approved by smart gmbh.

1022 Helpful hints

Tyres and wheels

Removing a wheel

쮿

Park the car on a level surface.

쮿

Apply the handbrake.

쮿

Press the brake pedal and move the
softip gearshift control to position

R.

쮿

Switch off the engine.

쮿

Use a suitable wheel wrench to slacken
off the wheel studs by turning them
anticlockwise, but do not remove them
yet.

쮿

Position a suitable car jack at one of
the designated jacking points (A).
These can be identified by
impressions in the door sill area.
> The contact surface of the jack

support must be positioned
vertically below the jacking point
(A).

Accident risk!
Position the car jack only at the

designated jacking points.
If you do not position the jack
correctly, the car could topple off the
jack and injure you or others.

Accident risk!
The jack is intended to lift the

car off the ground for short spells only,
when changing a wheel.
Trestles must be used when conducting
work underneath the car.
Ensure that the jack is resting on a
firm, level surface. On loose surfaces,
place the jack on a stable support that
cannot slip. Do not start the engine
throughout the entire wheelchanging
process.
Do not crawl under the vehicle while it
is raised with the jack. If you raise the
car in a manner other than that
described, it could topple off the jack
(e.g. as a result of starting the engine,
opening or closing a door or the front
or rear luggage compartment).

Helpful hints 1023

Tyres and wheels

쮿

Lever the car up using the jack until
the wheel is off of the ground.

쮿

Completely unscrew the wheel studs and
remove the wheel.

Fitting a new wheel

Accident risk!
Use exclusively the wheel studs

supplied.

Accident risk!
Replace any wheel studs that are

damaged or corroded.
Never oil or grease wheel studs. If the
thread of a wheel stud is damaged,
never continue to drive on it. Notify a
qualified specialist workshop, e.g. a
smart center.

Use only the designated wheel studs for
the wheel and car.

For safety reasons, smart gmbh
recommends using only the wheel studs
approved by smart gmbh. Other studs
could work loose.

1024 Helpful hints

Tyres and wheels

쮿

Fit the wheel in place and tighten the
bolts handtight using the wheel
wrench.

쮿

Lower the car and remove the jack from
under it.

쮿

Tighten the wheel bolts firmly using
the wheel wrench (tightening torque:
120 Nm).

>Note!
If the newly mounted wheels exhibit any
imbalance, have this checked and
rectified by a qualified specialist
workshop, e.g. a smart center.

Accident risk!
Have the tightening torque

checked immediately after changing a
wheel. The wheels could otherwise work
loose if they are not tightened to a
torque of 120 Nm.

Helpful hints 1025

Battery

Battery

Safety notes and protective measures
when handling the battery
Always observe the following safety notes
and protective measures when handling
the battery.
Use original smart batteries to assure a
reliable fit and the correct functioning
of electrical systems.

>Important!
Do not operate the vehicle without a
battery fitted, otherwise its electrical
equipment could be damaged.

Danger of explosion!
Highly explosive oxyhydrogen
gas can form when batteries are
being charged.

Fire, naked flame and smoking
are forbidden!
Prevent sparking!

Danger of acid poisoning!
Battery acid is corrosive. Do
not allow it to come into

contact with your skin, eyes or
clothing!
Immediately rinse any acid splashes
with clean water for several minutes!
In the event of contact with the eyes or
if swallowed, consult a doctor
immediately!

Wear eye protection!
Keep acid away from the eyes or
skin.

Keep children away!
Keep children away from
batteries, acid or charging
devices.

Observe the operating
instructions!
Always observe the notes
provided in the operating
instructions.

Danger of injury!
Do not place any metal objects on

the battery. Doing so could cause a
short circuit.
Use only leakfree batteries so that
vehicle occupants are not cauterised in
the event of an accident.

1026 Helpful hints

Battery

Your car's battery
Models with a petrol engine:

12 volt and 42 ampere hours.

Model with petrol engine (cold zone):

12 volts and 61 ampere hours.

Danger of injury!
If the positive terminal of the

connected battery is allowed to make
contact with vehicle components, there
could be a short circuit which could
ignite the highly explosive gas
mixture generated by the battery. You
and others could sustain serious
injuries as a result.
When disconnecting the battery,

always disconnect first the negative
terminal, then the positive terminal.

When connecting the battery, always

connect first the positive terminal,
then the negative terminal.

Do not loosen or disconnect the

battery terminal clips while the
engine is running.

Environment!
Batteries contain lead and
sulphuric acid, and should not be

disposed of as domestic waste!
Hand any spent, faulty or damaged
batteries in to a qualified specialist
workshop, e.g. a smart center, or to a
collection point for spent batteries.

Helpful hints 1027

Battery

Installing and removing the battery

Make sure that
you do not mix up the terminal clips.

The battery could otherwise be
destroyed.

you never allow a wrench or other metal

parts to come into contact with both
battery terminals or with the positive
terminal and the car body at the same
time. There could otherwise be a short
circuit.

Removing the battery

쮿

Switch off the engine.

쮿

Switch off all electrical consumers.

쮿

Open the front luggage compartment.

쮿

Turn the four retaining screws in the
luggage compartment storage tray
anticlockwise and remove.

쮿

Remove the storage tray.

쮿

First, unscrew the negative terminal,
then the positive terminal.

쮿

Remove the battery mount (A).

쮿

Remove the battery.

Installing the battery

쮿

Switch off all electrical consumers
where appropriate.

쮿

Place the battery in the designated
area.

쮿

Fasten the battery mount (A).

쮿

First fasten the positive terminal,
then the negative terminal.

쮿

Mount the positive terminal cover.

1028 Helpful hints

Battery

Tips on battery care
Your car's battery requires no

maintenance in normal vehicle
operation (DIN 43539/T2).
However, have the battery's charge
status and acid level checked at the
start of the cold season by a qualified
specialist workshop, e.g. a smart
center.

The battery stoppers on the top must be

opened to check the acid level (acid
must come up to MAX mark).

If the car is used almost exclusively

for short trips, recharge the battery
approximately every three months.
This will preserve your vehicle's
startability and prolong the battery's
operating life.

Disconnect the car's battery for

extended periods of nonuse and
recharge approximately every six
months.

If the car is left for extended periods

of time (three to four weeks) with the
battery still connected, it must be
recharged.