coolant SMART FORTWO COUPE ELECTRIC DRIVE 2015 User Guide

and heater, to the extent that these items
are available as factory-installed equip-
ment (whether installed or not).
Air pressure The amount of air inside the tire pressing
outward on each square inch of the tire. Air pressure is expressed in pounds per square
inch (psi), or kilopascal (kPa) or bars.
Aspect ratio Dimensional relationship between tire
section height and section width expressed
in percentage.
Bar Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi) to
1 bar; there are 100 kilopascals (kPa) to
1 bar.
Bead The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or
driven no more than 1 mile (1.6 km).
Curb weight The weight of a motor vehicle with standard
equipment including the maximum capa-
city of fuel, oil, and coolant, and, if so
equipped, air conditioning and additionaloptional equipment, but without passen-
gers and cargo.
DOT (Department of Transportation) A tire branding symbol which denotes the
tire meets requirements of the U.S. Depart- ment of Transportation. GAWR (Gross Axle Weight Rating) The GAWR is the maximum permissible axle
weight. The gross vehicle weight on each
axle must never exceed the GAWR for the
front and rear axle indicated on the cer-
tification label located on the driver’s
door B‑pillar.
GVW (Gross Vehicle Weight) The GVW comprises the weight of the vehi-
cle including fuel, tools, installed acces-
sories, passengers and cargo. The GVW must never exceed the GVWR indicated on the
certification label located on the driver’s
door B‑pillar.
GVWR (Gross Vehicle Weight Rating) This is the maximum permissible vehicle
weight of the fully loaded vehicle (weight
of the vehicle including all options, pas-
sengers, fuel, and cargo. It is indicated on
certification label located on the driver’s door B‑pillar.
Kilopascal (kPa) The metric unit for air pressure. There are
6.9 kPa to 1 psi; another metric unit for air
pressure is bars. There are 100 kilopas-
cals (kPa) to 1 bar.
Maximum load rating The maximum load in kilograms and pounds
that can be carried by the tire.
Maximum loaded vehicle weight The sum of curb weight, accessory weight,
total load limit and production options
weight.
Maximum permissible tire inflation
pressure This number is the greatest amount of air
pressure that should ever be put in the tire.144
Tires and wheels>> Operation.

Standing water
Do not drive through flooded areas or water of unknown depth. Before driving through
water, determine its depth. Never acceler-
ate before driving into water.
If you must drive through standing water,
drive slowly to prevent water from entering
R the front compartment
R the engine compartment
R the passenger compartment
! Water in these areas could cause dam-
age to
R electrical components
R electrical wiring
R the drive system
R the high-voltage battery
Any such damage is not covered by the
smart Limited Warranty. Passenger compartment
G
WARNING
Always fasten items being carried as
securely as possible.
In an accident, during hard braking or sud- den maneuvers, loose items thrown around
inside the vehicle may injure vehicle
occupants.
The cargo compartment is the preferred
place to carry objects. Control and operation of radio trans-
mitters
Radio and telephone G
WARNING
Please do not forget that your primary
responsibility is to drive the vehicle
safely. Only operate the radio or tele- phone
8
if road, weather and traffic condi-
tions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approx-
imately 14 m) every second.
Telephones and two-way radios G
WARNING
Never operate radio transmitters equipped with a built-in or attached antenna (i.e.
without being connected to an external
antenna) from inside the vehicle while the
drive system is switched on. Doing so couldlead to a malfunction of the vehicle’s elec-
tronic system, possibly resulting in an
accident and/or serious personal injury.
Radio transmitters, such as a mobile phone
or a citizens band unit should only be used inside the vehicle if they are connected to an antenna that is installed on the outside
of the vehicle.
Refer to the radio transmitter operation
instructions regarding use of an external
antenna. Coolant temperature
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise. ! Excessive coolant temperature causes
the red coolant temperature warning
lamp ? in the instrument cluster to
come on.
The drive system should not be operated
with the red coolant temperature warn-
ing lamp ?illuminated. Doing so may
cause serious damage to the drive system
and the high-voltage battery, which is
not covered by the smart Limited War-
ranty.
8 Observe all legal requirements. 152
Driving instructions>> Operation.

For more information on coolant tempera-
ture warning lamp (Y page 172).Driving abroad
Abroad, there is an extensive smart service network at your disposal. If you plan to
drive into areas which are not listed in the
index of your smart center directory, you
should request pertinent information from an authorized electric drive smart center.
Keep in mind, however, that due to the tech-
nical requirements of the smart fortwo
electric drive and its high-voltage power
systems, the vehicle should be serviced
only at an authorized electric drive smart
center.
If you plan to operate your vehicle in for-
eign countries, please be aware that:
R Service facilities or replacement parts
may not be readily available.
R The AC power sockets in some countries,
especially overseas, require different
plugs on the charging cable.
R Charging stations may not be available. Symmetrical low beams
i If you drive in countries where vehi-
cles drive on the other side of the road
than the country in which the vehicle is
registered, you must have the headlamps
modified for symmetrical low beams.
Relevant information can be obtained at
any authorized electric drive smart cen- ter. Vehicle care
Care tips
Regular and proper care will help to main-
tain the value of your vehicle. The best way to protect your vehicle from harmful envi- ronmental influences is to wash it and use
protective treatments regularly.
smart recommends that you care for the
paintwork at least twice a year (e.g. in the
spring and autumn). G
WARNING
Many cleaning products can be hazardous.
Some are poisonous, others are flammable.
Always follow the instructions on the par-
ticular container. Always open your vehi-
cle’s doors or windows when cleaning the
inside.
Never use fluids or solvents that are not
designed for cleaning your vehicle.
Always lock away cleaning products and
keep them out of reach of children.
! Follow the care tips. Wash your vehicle
preferably by hand.
While in operation or even while parked,
your vehicle is subjected to varying exter-
nal influences, which left unchecked can
attack the paint as well as the vehicle
underbody and lead to permanent damage.
Such damage is caused not only by extreme
and varying climatic conditions, but also
by:
R Air pollution
R Road salt
R Tar
R Gravel and stone chipping
To avoid paint damage, you should imme-
diately remove:
R Insects
R Bird droppings
R Tree sap, etc.
R Grease and oil
R Brake fluid
R Coolant
R Fuel
R Tar spots
! Failure to remove such dirt immedi-
ately can cause damage to the paint or the Vehicle care
153>> Operation. Z

Display messages
The following display messages appear in the multifunction display (Y page 83).
You can confirm certain display messages.
X Confirming messages: Press the OK button on the control lever briefly (Y page 83).Display messages Possible causes/consequences and
M
MSolutions ?
Switch Off Engine Switch Off Engine The coolant is too hot.
In addition, the
?warning lamp in the instrument cluster
lights up and a warning signal sounds.
X Stop the vehicle immediately as soon as it is safe to do so.
X Switch off the drive system immediately.
X Engage the parking brake.
X Make sure the air supply for the radiator is uninterrupted.
X Only start the drive system again after the display message
disappears. You could otherwise damage the drive system. $
(USA only)
J (Canada only)
Release Parking Release Parking
Brake Brake You are driving with the parking brake engaged.
In addition, the $(USA only), J(Canada only) warning
lamp in the instrument cluster lights up and a warning signal sounds.
X Release the parking brake. $
(USA only)
J (Canada only)
Brake System See
Brake System See
Operator's Manual Operator's Manual There is a slight malfunction in the vacuum supply of the brak-
ing system.
X When braking, continue to depress the brake pedal.
X Contact an authorized electric drive smart center. $
(USA only)
J (Canada only)
Brake Malfunction
Brake Malfunction
Y Service Required
Service Required There is a serious malfunction in the vacuum supply of the
braking system.
In addition, a warning signal sounds.
X Contact an authorized electric drive smart center. 5
Shift Shift
to
toN
Nor
or P
Pto
to
Start
Start You have attempted to start the engine while the automatic
transmission was in reverse gear
Ror drive position D.
X Shift the automatic transmission into park position Por
neutral position N.
X Make sure that Nor Pis shown in the multifunction display. Display messages
161>> Practical hints. Z

Display messages Possible causes/consequences and
M
MSolutions 5
Transmission Not Transmission Not
in P in P The driver's door is open and the gear selector lever is in
position
R,Nor D.
In addition, a warning signal sounds. X Move the gear selector lever to P.5
Malfunction Serv. Malfunction Serv.
Req. Req. There is a malfunction in the coolant compressor or in the
heating/coolant circuit.
X Contact an authorized electric drive smart center. 5
Battery Power Too Battery Power Too
Low Low The outside temperature is too low. The full battery capacity is
not available.
The vehicle does not start.
X Charge the high‑voltage battery (Y page 112).ÿ
High-voltage Bat‐ High-voltage Bat‐
tery at Reserve tery at Reserve
Level Level The high‑voltage battery has reached reserve level.
X Charge the high‑voltage battery (Y page 112).*
Charge HV Battery Charge HV Battery
Immediately Immediately The charge level of the high‑voltage battery is below 5 %.
In addition, a warning signal sounds.
X Charge the high‑voltage battery (Y page 112).N
Engine Engine
Restart
Restart Not
Not
Possible
Possible There is a serious malfunction in the drive system. The drive
system can no longer be started.
In addition, a warning signal sounds.
X Do not restart the drive system.
X Contact an authorized electric drive smart center. N
High-Voltage Sys‐ High-Voltage Sys‐
tem tem
Y Service Required
Service Required There is a malfunction in the drive system, the electric motor
or the high‑voltage battery. There is a high‑voltage safety
problem.
In addition, the Nwarning lamp in the instrument cluster
lights up and a warning signal sounds.
X Contact an authorized electric drive smart center. þ
Reduce Reduce
YSpeed Speed The vehicle speed exceeds 84 mph (135 kmh).
In addition, a warning signal sounds.
X Reduce the speed.
The message disappears. 162
Display messages>> Practical hints.

Problem Possible causes/consequences and
M
MSolutions #!
The turn signal indi-
cator lamp(s) do(es)
not illuminate when
the ignition is
switched on and the
corresponding turn
signal is switched on
or the hazard warning
flasher is switched
on. The turn signal indicator lamp(s) has (have) failed.
X Have the turn signal indicator lamp(s) checked at an author-
ized electric drive smart center. #!
The turn signal indi-
cator lamp(s) flashes
at double frequency. One of the turn signals is malfunctioning.
X Replace the bulb as soon as possible (Y page 180).
or
X Have the turn signal checked at an authorized electric drive
smart center as soon as possible. Drive system
Problem Possible causes/consequences and
M MSolutions ?
The red coolant
temperature
warning lamp
illuminates. The coolant is too hot. The high-voltage battery and/or the
drive system are not cooled sufficiently.
X Stop the vehicle immediately in a safe location.
X Switch off the drive system.
X Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized electric drive
smart center. 172
What to do if ...>> Practical hints.

No. Accessory/Component Amperage Color
E
CPC, shifter, brake force booster vacuum
pump 7.5 A Brown
F
Coolant pumps 1 and 2, high-voltage battery 15 A Blue
G
ESP
®
control unit 25 A Neutral
H
Exterior lamp switch, turn signal lamp
switch, cockpit switch module, on-board
diagnostics socket, exterior rear view mir-
ror heating, anti-theft warning system,
rain-light sensor, charge level and power
gauges, central locking system, instrument
cluster, Tire Pressure Monitoring System
(TPMS), brake and turn signal lamps (left and right) 10 A Red
I
— — —
J
— — —
K
Safety circuit high-voltage battery 15 A Blue
L
— — —
M
Rear window wiper (coupé only) 15 A Blue
N
ESP
®
control unit, EPS control unit, restraint
systems 10 A Red
O
Electric drive components, engine control
unit, transmission control unit, on-board
diagnostics socket, sound generator 7.5 A Brown
P
Air conditioning system, exterior rear view
mirror adjustment, washer pump, audio, seat
heating, wiper switch, cruise control, soft
top switch (cabriolet only), backup lamp 10 A Red
Q
Auxiliary power outlet 15 A Blue
R
Left low‑beam headlamp 7.5 A Brown
S
Right low‑beam headlamp 7.5 A Brown
T
— — —
U
Right high‑beam headlamp 7.5 A Brown
V
Left high‑beam headlamp 7.5 A Brown
W
Electric drive components 7.5 A Brown Fuses
209>> Practical hints. Z

No. Accessory/Component Amperage Color
X
Rear window defroster 40 A Orange
Y
Soft top (cabriolet only) 30 A Green
Z
Radiator cooling fan 40 A Orange
\
Horn, central locking system 20 A Yellow
^
— — —
_
Starter switch (ignition) 50 A Red
a
ESP
®
control unit 40 A Orange
©
EPS control unit 30 A Green
y
Exterior rear view mirror heating 7.5 A Brown
z
Brake lamps 7.5 A Brown
|
— — —
~
Tire pressure monitor control unit 7.5 A Brown
¡
Coolant pump, electric drive components, HV
interior PTC heater passenger compartment,
windshield unit car2go 10 A Red
¢
Audio, subwoofer, sound system, soft top
(cabriolet only) 15 A Blue
£
Interior lighting 5 A Light brown
¤
Surround sound system 20 A Yellow
¥
Seat heating control unit 25 A Neutral210
Fuses>> Practical hints.

Capacities
Components Capacity Coolants, lubricants, etc.
Coolant system approx. 6.9 US qt (6.5 l) Anticorrosion/Antifreeze meet-
ing specification MB 325.0
Air conditioning system 500 g
(17.6 oz) R134a refrigerant (never R 12)
120 g
(4.2 oz) PAG lubricant oil Daphne 1234
Windshield washer sys-
tem 4.0 US qt (3.8 l)
Windshield washer concentrate
13
(Y page 218)
Washer fluid mixing ratio
(Y page 218) Brake fluid
G
WARNING
During vehicle operation, the boiling
point of the brake fluid is continuously
reduced through the absorption of moisture from the atmosphere. Under extremely
strenuous operating conditions, this mois-
ture content can lead to the formation of
bubbles in the system, thus reducing the
system’s efficiency.
Therefore, the brake fluid must be replaced regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval.
Only brake fluid approved by smart is rec- ommended. Any authorized electric drive
smart center will provide you with addi-
tional information. Windshield/rear window washer system
During all seasons: X Use a windshield washer concentrate
labeled for summer and water for tem-
peratures above freezing point.
X Use a windshield washer concentrate
labeled for winter and water for temper-
atures below freezing point.
X Premix the windshield washer fluid in a
suitable container depending on the out-
side temperature and in accordance with
the manufacturer’s instructions 14
.
Washer fluid mixing ratio R
Temperature above 32¦ (0¥):
1 part windshield washer concentrate
labeled for summer to 100 parts water
R Temperature of 14¦ (-10¥):
1 part windshield washer concentrate
labeled for winter to 2 parts water
R Temperature of -4¦ (-20¥):
1 part windshield washer concentrate
labeled for winter to 1 part water
13 Use a windshield washer concentrate labeled for summer and water for temperatures above freezing
point or a windshield washer concentrate labeled for winter and water for temperatures below freezing
point.
14 Refer to the notes for use on the container. 218
Service fluids and capacities>> Technical data.

G
WARNING
Windshield washer concentrate is highly
flammable. Fire, naked flames and smoking
are prohibited when windshield washer
concentrate is being handled. Coolants
The battery and drive system coolant is a
mixture of water and anticorrosion/anti-
freeze, which provides: R Corrosion protection
R Freeze protection
R Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory with a coolant providing freeze protection
to approximately -35¦ (-37¥) and corro-
sion protection.
! Add premixed coolant solution only.
Adding water and MB 325.0 Anticorro-
sion/Antifreeze separately from each
other, could cause drive system damage
not covered by the smart Limited War-
ranty.
If the antifreeze mixture is effective to
-35¦ (-37¥), the boiling point of the
coolant in the pressurized cooling system
is reached at approximately 266¦ (130¥).
The coolant solution must be used year
round, even in countries which have high
temperatures to provide the necessary cor-
rosion protection and increase boil‑over
protection. Refer to Maintenance/ Service
Booklet for replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance booklet is only applicable if
MB 325.0 Anticorrosion/Antifreeze solu-
tion or other smart approved products of
equal specification are used to renew the
coolant concentration or bring it back up
to the proper level. For information on other smart approved
products of equal specification, contact an
authorized electric drive smart center.
To provide important corrosion protec-
tion, the solution must be at least 50% anti-
corrosion/antifreeze (equivalent to freeze
protection to approximately -35¦
[-37¥]).
If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approximately -49 ¦[(-45¥ ]), the
drive system and battery temperature will
increase due to the lower heat transfer
capability of the solution. Therefore, do
not use more than this amount of anticor-
rosion/antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze should
be used to bring it up to the proper level
(have cooling system checked for signs of
leakage). Please make sure the mixture is
in accordance with label instructions.
Always use anticorrosion/antifreeze that
has been approved by smart. For informa-
tion contact an authorized electric drive
smart center.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water.
If you are not sure about the water quality, consult an authorized electric drive smart
center.
Capacities Cooling-system
capacity
All models approx. 6.9 US qt
(6.5 l)
Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum components
in motor vehicle drive systems necessi-
tates that anticorrosion/antifreeze cool- Service fluids and capacities
219>> Technical data. Z