2012 SMART FORTWO COUPE cooling

X
Press RES/+ button ; briefly.
The cruise control resumes the
previously set speed.
i The last set speed stored in memory is
deleted when the engine is turned off.
Changing the set speed You must have set a speed prior to
increasing or decreasing the current
speed.
i
Depressing the accelerator pedal does
not deactivate the cruise control. After
a brief acceleration (e.g. for passing),
the cruise control will resume the last
set speed.
Continuous adjustment
X Press and hold RES/+ button ; to
increase the speed.
or
X Press and hold SET/− = to decrease the
speed.
X Press and hold the respective button
until the desired speed is reached.
X Release the respective button.
The new speed is stored.
Adjustment in 1 mph (Canada 1 km/h)
increments
X Press RES/+ button ; briefly to increase
the speed.
or
X Press SET/− = briefly to decrease the
speed.
The new speed is stored after releasing the
respective button. HVAC (Heating, Ventilation, Air
Conditioning)
Notes on HVAC
G
WARNING
Follow the recommended settings for
heating
and cooling given on the following
pages. Otherwise the windows could fog up,
impairing visibility and endangering you
and others.
Air conditioning with climate control* The air conditioning improves the level of
comfort when driving at high outside
temperatures by cooling and
dehumidifying the air.
Nearly all dust particles, pollutants, are
filtered out by an integrated particle
filter before outside air enters the
passenger compartment through the air
distribution

system. It also operates when
the air conditioning is switched off and
you have switched on the blower.
The air conditioning only works when the
engine is running and the blower is
switched on. Maximum effectiveness is
achieved if you drive with the windows
closed.
i In warmer weather, ventilate the
passenger compartment for a short
period of time before utilizing the air
conditioning. 102
HVAC (Heating, Ventilation, Air Conditioning)>> Controls.
* optional

Air conditioning with climate control*
Control panel (Y page 103).
X
Make sure the engine is running.
X Switching on: Push air volume
control : to level 1 or higher.
X Press air conditioning switch ;.
The indicator lamp in air conditioning
switch ; comes on.
X Switching off: Press air conditioning
switch ; once more.
The indicator lamp in air conditioning
switch ; goes out.
i The stored status is restored, if you
switch on the ignition again.
i The air condition will be suspended
temporarily:
R if the engine speed is too low
R when driving off
The air condition is switched off:
R at a coolant temperature of more than
239¦ (115¥)
R at outside temperatures below
38¦
(3¥) Setting the temperature
Heating Control panel (Y page 103).
i
You should raise or lower the
temperature setting in small
increments.
X Increasing or decreasing: Push
temperature control ? up or down.
Rapid cooling
X Push air volume control : fully up.
X Turn air distribution control = to
position P. X
Push temperature control ? fully down.
X Adjust the air vents as desired.
Rapid heating
X Push air volume control : to level 3.
X Turn air distribution control = to a
position between z and O.
X Push temperature control ? fully up.
X Adjust the air vents towards the
occupants.
Air conditioning with climate control* Control panel (Y page 103).
i
You should raise or lower the
temperature setting in small
increments, preferably starting at
70¦ (21¥).
X Increasing or decreasing: Push
temperature control A up or down. Adjusting air vents
G
WARNING
When operating the heating or air
conditioning with climate control*, the
air that enters the passenger compartment
through

the air vents can be very hot or very
cold (depending on the set temperature).
This may cause burns or frostbite on
unprotected skin in the immediate area of
the air vents. Always keep sufficient
distance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution control to direct the air
to air vents in the vehicle interior that are
not in the immediate area of unprotected
skin.
To make sure the heating or air
conditioning with climate control* works
properly, please observe the following:
R Keep the air intake grill free from
deposits, e.g. ice or snow, to ensure that104
HVAC (Heating, Ventilation, Air Conditioning)
>> Controls.
* optional

Coolant
G
WARNING
In order to avoid potentially serious burns:
R Use extreme caution when opening the
service flap if there are any signs of
steam or coolant leaking from the
cooling system, or if the coolant
temperature warning lamp ? in the
instrument cluster indicates that the
coolant is overheated.
R Do
not remove the pressure cap on coolant
reservoir if coolant temperature is
above 158¦ (70¥). Allow engine to cool
down before removing cap. The coolant
reservoir contains hot fluid and is under
pressure.
R Using a rag, slowly turn the cap
approximately 1
/ 2 turn to relieve excess
pressure. If opened immediately,
scalding hot fluid and steam will be
blown out under pressure.
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check the
coolant level the vehicle must be parked on
level ground and the engine must have
cooled down. For more information, see
“Coolants” (Y page 223).
Checking coolant level X
Remove the service flap and insert it on
the front of the vehicle ( Y page 120). The coolant reservoir is located in the
front compartment on the driver’s side.
X
Allow the radiator to cool down for at
least 30 minutes.
X Using a rag, slowly turn pressure
cap : approximately 1
/ 2 turn
counterclockwise to release any excess
pressure.
X Continue turning pressure cap :
counterclockwise and remove it.
The coolant level is correct if the level
R
for cold coolant: reaches marking
bar ; visible through the filling
opening
R for warm coolant: is approximately
0.6 in (1.5 cm) higher
X If necessary, add coolant.
Adding coolant X
Add coolant as required. The coolant
level

may not exceed the maximum filling
level.
X Replace and tighten pressure cap :.
X Remount the service flap and close it
(Y page 120). Windshield/rear window washer system
Both the windshield and the rear window 14
washer are supplied from the windshield
washer reservoir.
The

recommended minimum filling level is
1.06 US qt (1.0 l).
X Remove the service flap and insert it on
the front of the vehicle ( Y page 120).
The windshield washer reservoir is located
in the front compartment on the driver’s
side.
14 Coupé only.122
Front compartment
>> Operation.

Capacities
Components Model Capacity Fuels, coolants, lubricants,
etc.
Engine with oil
filter All models 3.5 US qt (3.3 l) Approved engine oils
Cooling system All models approx. 4.5 US qt (4.3 l) Anticorrosion/Antifreeze
meeting specification
MB 325.0
Fuel tank All models 8.72 US gal (33.0 l) Premium unleaded gasoline
(Minimum Posted Octane 91
[Avg. of 96 RON/86 MON])
Fuel tank
reserve All models approx. 1.32 US gal (5.0 l)
Air
conditioning
system* All models — R134a refrigerant and
special PAG lubricant oil
(never R 12)
Windshield
washer system All models 4.0 US qt (3.8 l) Windshield washer
concentrate
27
(Y page 222)
Washer fluid mixing ratio
(Y page 222) Engine oils
Engine oils are specifically tested for
their suitability in our engines and
durability for our service intervals.
Therefore, only use engine oils and oil
filters required for vehicles with the
Maintenance System. For a listing of
approved engine oils and oil filters
contact an authorized smart center.
! Using engine oils and oil filters of
specification
other than those expressly
required for the Maintenance System, or
changing of oil and oil filter at change
intervals longer than those called for by
the Maintenance System will result in
engine or emission control system
damage not covered by the smart Limited
Warranty. Please follow Maintenance System
recommendations for scheduled oil
changes. Failure to do so will result in
engine or emission control system
damage
not covered by the smart Limited
Warranty.
Viscosity grades for engine oils Using the chart below, select oil viscosity
according to the lowest air temperature
expected before the next oil change.
27 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. 220
Service fluids and capacities
>> Technical data.
* optional

are prohibited when windshield washer
concentrate is being handled.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, 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
corrosion protection.
! Add premixed coolant solution only.
Adding water and MB 325.0
Anticorrosion/Antifreeze separately
from each other, could cause engine
damage not covered by the smart Limited
Warranty.
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
corrosion 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
solution 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 smart center.
To provide important corrosion
protection, the solution must be at least
50% anticorrosion/antifreeze (equivalent
to freeze protection to approximately
-35¦ [-37 ¥]).
If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze
protection to approximately -49¦
[(-45 ¥]), the engine temperature will
increase due to the lower heat transfer
capability of the solution. Therefore, do
not use more than this amount of
anticorrosion/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
information contact an authorized 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 smart center.
Anticorrosion/antifreeze Your vehicle contains a number of
aluminum parts. The use of aluminum
components in motor vehicle engines
necessitates that anticorrosion/
antifreeze

coolant used in such engines be
specifically formulated to protect the
aluminum parts.
Failure to use such anticorrosion/
antifreeze coolant will result in a
significantly shortened service life.
Therefore, the following product is
strongly recommended for use in your Service fluids and capacities
223
>> Technical data. Z

vehicle: MB 325.0 Anticorrosion/
Antifreeze agent.
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked.
The
coolant is also regularly checked each
time you bring your vehicle to an
authorized smart center for service.
Anticorrosion/antifreeze quantity: Approximate freeze protection
-35¦ (-37
¥) -49¦ (-45¥)
Cooling system
2.27 US qt (2.15 l) 2.45 US qt (2.32 l)224
Service fluids and capacities
>> Technical data.