brake SMART FORTWO 2016 Repair Manual

Fuse allocation
No.ConsumerCurrentColor coding
1Starter motor5 ABrown
2Power steering control unit5 ABrown
3Lighting control unit5 ABrown
4Air bag5 ABrown
5‑‑‑
6Instrument cluster10 ARed
7Horn, alarm system15 ABlue
8Control unit power supply10 ARed
9Control unit power supply10 ARed
10Central control unit20 AYellow
11Turn signals15 ABlue
12Central control unit10 ARed
13Central control unit15 ABlue
14Power windows (anti-entrapment feature)30 AGreen
15ESP®5 ABrown
16Interior lighting10 ARed
17Immobilizer3 AViolet
18Electrical exterior mirror5 ABrown
19Brake lamps10 ARed
20Parking aid, headlamp settings15 ABlue
Fuses175
>> Breakdown assistance.
Z

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).
Important safety notes
GWARNING
If wheels and tires of the wrong size are
used, the wheel brakes or suspension com-
ponents may be damaged. There is a risk of
an accident.
Always replace wheels and tires with those
that fulfill the specifications of the orig-
inal part.
When replacing wheels, make sure to use the
correct:
Rdesignation
Rmodel
When replacing tires, make sure to use the
correct:
Rdesignation
Rmanufacturer
Rmodel
GWarning
A flat tire severely impairs the driving,
steering and braking characteristics of
the vehicle. There is a risk of an accident.
do not drive with a flat tire. Immediately
replace the flat tire with your spare wheel,
or consult a qualified specialist workshop.
Accessories that are not approved for your
vehicle by smart or that are not being used
correctly can impair driving safety. Before purchasing and using non-approved
accessories, visit a qualified specialist
workshop and inquire about:
Rsuitability
Rlegal stipulations
Rfactory recommendations
Information on dimensions and types of
wheels and tires for your vehicle
(
Ypage 200).
Information on air pressure for the tires on
your vehicle can be found:
Ron the tire and loading information table
on the driver's side B-pillar
Runder "tire pressure" (Ypage 180)
iFurther information on wheels and tires
can be obtained at any qualified specialist
workshop.
Operation
Information on driving
RCheck the tire pressures when the vehicle
is heavily laden and, if necessary, adjust
before beginning your journey.
RWhile driving, pay attention to vibrations,
noises and unusual handling characteris-
tics, e.g. pulling to one side. This may
indicate that the wheels or tires are dam-
aged. If you suspect that a tire is defec-
tive, reduce your speed immediately. Stop
the vehicle as soon as possible to check the
wheels and tires for damage. Hidden tire
damage could also be causing the unusual
handling characteristics. If you find no
signs of damage, have the tires and wheels
checked at a qualified specialist work-
shop.
RWhen parking your vehicle, make sure that
the tires do not get deformed by the curb or
other obstacles. If it is necessary to drive
over curbs, speed humps or similar eleva-
tions, try to do so slowly and at an obtuse
angle. Otherwise, the tires, particularly
the sidewalls, may be damaged.
Operation177
>> Wheels and tires.
Z

(Ypage 126) and the indicator and warning
lamps in the instrument cluster in the "Tires" section (
Ypage 139).
Restarting the tire pressure monitor
When you restart the tire pressure monitor,
all existing warning messages are deleted
and the warning lamps go out. The monitor
uses the currently set tire pressures as the
reference values for monitoring. In most
cases, the tire pressure monitor will auto-
matically detect the new reference values
after you have changed the tire pressure.
However, you can also define reference values
manually as described here. The tire pres-
sure monitor then monitors the new tire pres-
sure values.
XSet the tire pressure to the value recom-
mended for the corresponding driving sit-
uation on the Tire and Loading Information
placard on the B-pillar on the driver's side
(
Ypage 180).
Additional tire pressure values for dif-
ferent loads can also be found on the tire
pressure table on the inside of the fuel
filler flap (
Ypage 180).
XMake sure that the tire pressure is correct on all four wheels.
On-board computer with a color display
XTo restart the tire pressure monitor: press
the 0063 or0064 button on the steering
wheel to select the Settings
menu and
press 0076on the steering wheel to con-
firm.
XPress the 0063or0064 button to select the
TirePressureMonitorsubmenu and con-
firm with 0076.
The Tire Pressure Monitor Use Cur‐
rentPressuresAsNewReferenceVal‐ues?message appears in the display.
If you wish to confirm the restart:
XPress the 0063or0064 button to select yesand press the0076button to confirm.
The Tire Pressure Monitor Restarted
message appears in the display.
XPress 0076to confirm.
After a short while, the message is also
hidden without pressing the 0076button.
After driving for a few minutes, the system
checks whether the current tire pressures are within the specified range. The new
tire pressures are then accepted as refer-
ence values and monitored.
iIf the
Tire Pressure Monitor Restar‐tedmessage does not appear after approx-
imately 5 seconds, the restart was not suc-
cessful. If this occurs, repeat the restart.
If you wish to cancel the restart:
XPress the 0063or0064 button to select noand press the0076button to confirm.
The tire pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tire pressure
monitor
CountryRadio type approval number
USAFCC ID: MRXMW2433A
FCC ID: MRXGG4
FCC ID: MRXMC34MA4
CanadaIC: 2546A-MW2433A
IC: 2546A-GG4
IC: 2546A-MC34MA4
Loading the vehicle
Instruction labels for tires and loads
GWARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair
the steering and driving characteristics
and lead to brake failure. There is a risk of
accident.
Observe the load rating of the tires. The
load rating must be at least half of the GAWR
of your vehicle. Never overload the tires by exceeding the maximum load.
Two instruction labels on your vehicle show
the maximum possible load.
(1) The Tire and Loading Information plac- ard is on the B-pillar on the driver's
side. The Tire and Loading Information
placard shows the maximum permissible
number of occupants and the maximum
permissible vehicle load. It also con-
Loading the vehicle185
>> Wheels and tires.
Z

Tread
The part of the tire that comes into contact
with the road.
Bead
The tire bead ensures that the tire sits
securely on the wheel. There are several steel
wires in the bead to prevent the tire from
coming loose from the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 5 lbs (2.3 kilograms).
These optional extras, such as high-perform-
ance brakes, level control, a roof rack or a
high-performance battery, are not included
in the curb weight and the weight of the
accessories.
TIN (Tire Identification Number)
This is a unique identifier which can be used
by a tire manufacturer to identify tires, for
example for a product recall, and thus iden-
tify the purchasers. The TIN is made up of the manufacturer's identity code, tire size, tire
type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
Treadwear indicators
Narrow bars (tread wear bars) that are dis-
tributed over the tire tread. If the tire tread
is level with the bars, the wear limit of 00CDin
(1.6 mm) has been reached.
Occupant distribution
The distribution of occupants in a vehicle at
their designated seating positions.
Total load limit
Nominal load and luggage load plus 68 kg
(150 lbs) multiplied by the number of seats in
the vehicle.
Changing a wheel
Flat tire
You can find information on what to do in the
event of a flat tire in the "Flat tire" section
(
Ypage 161).
Rotating the wheels
GWARNING
Never interchange the front and rear wheels
as they have different dimensions, e.g.
size, wheel offset etc. Otherwise, there
could be a negative effect on the road hold- ing and you could endanger yourself or oth-
ers.
!On vehicles equipped with a tire pressure
monitor, electronic components are loca-
ted in the wheel.
Tire-mounting tools should not be used
near the valve. This could damage the elec-
tronic components.
Only have tires changed at a qualified spe-
cialist workshop.
Various types of steel wheel can be fitted on
your vehicle. Some steel wheels have a red
mark in the hub cap area. The hub cap has to be
removed to see the red mark, see "Raising the
vehicle" in the "Wheel change" section
(
Ypage 197). When changing the wheels,
always fit wheels of the same type on all axles.
Always pay attention to the instructions and
safety notes when changing a wheel
(
Ypage 196).
The wear patterns on the front and rear tires
differ, depending on the operating condi-
tions. Front tires typically wear more on the
shoulders and the rear tires in the center.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and reac-
tivate the tire pressure monitor if necessary.
196Changing a wheel
>> Wheels and tires.

Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a
risk of hydroplaning. These advantages can
only be gained if the tires are fitted corre-
sponding to the direction of rotation.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel.
Mounting a wheel
Preparing the vehicle
XMake sure that you have the appropriate
tire-changing tools. For further informa-
tion inquire at any smart center.
XStop the vehicle on solid, non-slippery and
level ground.
XApply the parking brake (Ypage 101).
XBring the front wheels into the straight-
ahead position.
XVehicles with automatic transmission:
shift the transmission to position P.
XVehicles with manual transmission:
depress the clutch pedal fully and engage
first or reverse gear.
XSwitch off the engine.
XRemove the SmartKey from the ignition
lock.
XAlso secure the vehicle against rolling
away.
Securing the vehicle to prevent it from
rolling away
XOn level ground:place chocks or other suit-
able items under the front and rear of the
wheel that is diagonally opposite the wheel
you wish to change.
XOn light downhill gradients: place chocks
or other suitable items in front of the
wheels of the front and rear axle.
Raising the vehicle
GWARNING
If you do not position the jack correctly at
the appropriate jacking point of the vehi- cle, the jack could tip over with the vehicle
raised. There is a risk of injury.
Only position the jack at the appropriate
jacking point of the vehicle. The base of the jack must be positioned vertically,
directly under the jacking point of the
vehicle.
Changing a wheel197
>> Wheels and tires.
Z

Observe the following when raising the vehi-
cle:
Rmake sure you have a suitable jack and
wheel wrench. If used incorrectly, the jack
could tip over with the vehicle raised.
For further information inquire at any
smart center.
Rthe jack is designed only to raise and hold
the vehicle for a short time while a wheel
is being changed. It is not suited for per-
forming maintenance work under the vehi-
cle.
Ravoid changing the wheel on uphill and
downhill slopes.
Rbefore raising the vehicle, secure it from
rolling away by applying the parking brake
and inserting wheel chocks. Never disen-
gage the parking brake while the vehicle is
raised.
Rthe jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a
large, flat load-bearing underlay must be
used. On a slippery surface, a non-slip
underlay must be used, e.g. rubber mats.
Rdo not use wooden blocks or similar objects
as a jack underlay. Otherwise, the jack will
not be able to achieve its load-bearing
capacity due to the restricted height.
Rmake sure that the distance between the
underside of the tires and the ground does
not exceed 1.2 in (3 cm).
Rnever place your hands and feet under the
raised vehicle.
Rdo not lie under the vehicle.
Rdo not start the engine when the vehicle is
raised.
Rdo not open or close a door or the tailgate
while the vehicle is raised.
Rmake sure that no persons are present in the
vehicle when the vehicle is raised.
!The jack is designed exclusively for
jacking up the vehicle at the jacking
points. Otherwise, your vehicle could be
damaged.
Steel wheel with hub cap
XVehicles with steel wheels and hub caps:
carefully reach into two of the hub cap
openings and remove the hub cap.
Steel wheel with hub cap
XVehicles with steel wheels and hub caps:
remove the hub cap.
XUsing wheel wrench 0043, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com-
pletely.
198Changing a wheel
>> Wheels and tires.

Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, stor-
age and disposal of service products on the
labels of the respective original contain-
ers. Always store service products sealed
in their original containers. Always keep
service products out of the reach of chil-
dren.
HEnvironmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following:
RFuels
RLubricants (e.g. engine oil, transmission
oil)
RCoolant
RBrake fluid
RWindshield washer fluid
RClimate control system refrigerant
Components and service products must be
matched. You should therefore only use prod-
ucts that have been tested and approved by
Mercedes-Benz.
Information on tested and approved products
can be obtained at a smart center.
You can recognize service products approved by Mercedes-Benz by the following inscrip-
tion on the containers:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB Approval (e.g. MB Approval 229.51)
Other designations or recommendations
indicate a level of quality or a specification in accordance with an MB Sheet Number (e.g.
MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
iFor further information inquire at any
smart center.
Fuel
Important safety notes
GWARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating
before refueling.
GWARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or cloth-
ing and that it is not swallowed. Do not
inhale fuel vapors. Keep fuel away from
children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance
without delay.
RIf fuel is swallowed, seek medical assis-
tance without delay. Do not induce vom-
iting.
RImmediately change out of clothing
which has come into contact with fuel.
Tank capacity
ModelTotal capa- city
All models8.7 US gal(33.0 l)
Service products and filling capacities207
>> Technical data.
Z

Engine oil viscosity
Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscos-
ity, this means that it is thick; a low viscos-
ity means that it is thin.
Select an engine oil with an SAE (viscosity)
classification suitable for the prevailing
outside temperatures. The table shows you
which SAE classifications are to be used. The
low-temperature properties of engine oils
can be significantly impaired during oper-
ation due to, for example, aging or soot and
fuel accretion. It is therefore strongly rec-
ommended that you carry out regular oil
changes using an approved engine oil with
the appropriate SAE classification.
Brake fluid
When handling brake fluid, observe the
important safety notes on service products
(
Ypage 207).
The brake fluid change intervals can be found
in the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz according to MB Approval 331.0.
Information about approved brake fluid can
be obtained at any qualified specialist work-
shop or on the Internet at
http://bevo.mercedes-benz.com.
iHave the brake fluid regularly replaced at
a qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Coolant
General notes
!Only add coolant that has been premixed
with the desired antifreeze protection.
You could otherwise damage the engine.
Further information on coolants can be
found in the Mercedes-Benz Specifications
for Service Products, MB BeVo 310.1, e.g. on
the Internet at
http://bevo.mercedes-benz.com. Or con-
tact a qualified specialist workshop.
!Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the engine cooling system is not sufficiently protected from corrosion and
overheating.
iHave the coolant regularly replaced at a
qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Comply with the important safety precautions
for service products when handling coolant
(
Ypage 207).
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks:
Rcorrosion protection
Rantifreeze protection
Rraising the boiling point
If the coolant has antifreeze protection down
to -35 ‡(-37 †), the boiling point of the cool-
ant during operation is approximately 266 ‡
(130 †).
The antifreeze/corrosion inhibitor concen-
tration in the engine cooling system should:
Rbe at least 50 %. This will protect the
engine cooling system against freezing
down to around -13‡(-25 †).
Rnot exceed 50 % (antifreeze protection down
to-35 ‡[-37 †]). Otherwise, heat will not be
dissipated as effectively.
smart recommends an antifreeze/corrosion
inhibitor concentrate in accordance with MB
Specifications for Operating Fluids 310.1 or
325.6.
Antifreeze/corrosion inhibitor concentrate
in accordance with MB Specifications for
210Service products and filling capacities
>> Technical data.