2008 SMART FORTWO COUPE cooling

Heating
148
>> Controls.
Switching heating on/off>Switching on: Make sure that the key in the
starter switch is turned to position1.
>Push temperature control
4 up.
> Switching off: Push temperature control
4
fully down.
Setting the temperaturei
You should raise or lower the temperature
setting in small increments.
> Increasing or decreasing: Push tempera

ture control
4 up or down.
Rapid cooling
>Push air volume control
1 fully up.
>Turn air distribution control
3 to
positiona.
>Push temperature control
4 fully down.
>Adjust the air vents as desired.
Rapid heating
>Push air volume control
1 to level3.
>Turn air distribution control
3 to a posi

tion betweenP andY.
>Push temperature control
4 fully up.
>Adjust the air vents towards the occupants.
Adjusting air distributionYou can adjust the air distribution using air
distribution control
3.
The following symbols are found on the air
distribution control:
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.
Symbol
Function
P
Directs air to the windshield
and side windows
Y
Directs air to the footwells and
air distribution is reduced at
the center and side air vents
a
Directs air through the center
and side air vents

Air conditioning with climate control*
>> Controls.
151
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 com

partment 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 passen

ger compartment for a short period of time
before utilizing the air conditioning.
Switching air conditioning on/off>Make sure that the engine is running.
>Switching on: Push air volume control
1 to
level1 or higher.
>Press switch
2.
The air conditioning is switched on.
The indicator lamp on the switch comes on.
>Switching off: Press switch
2 once more.
The air conditioning is switched off.
The indicator lamp on the switch goes out.
i
The stored status is restored, if you switch
on the ignition again.
i
The air condition will be suspended tem

porarily:
• if the engine speed is too low
•when driving off
The air condition is switched off:
• at a coolant temperature of more
than 239°F (115°C)
• at outside temperatures below 38°F (3°C)
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.

Front compartment
178
>> Operation
Coolant
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" (

page 309).Checking coolant level
The coolant reservoir is located in the front
compartment on the driver’s side.
1
Pressure cap
2
Marking bar
G
Warning!
In order to avoid potentially serious
burns:
• 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 lampD in the
instrument cluster indicates that the
coolant is overheated.
• Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid
and is under pressure.
• Using a rag, slowly open the cap ap

proximately
1/2 turn to relieve excess
pressure. If opened immediately,
scalding hot fluid and steam will be
blown out under pressure.
P20.30
2265
31

Service fluids and capacities
304
>> Technical data.
Components
Model
Capacity
Fuels, coolants, lubricants, etc.
Engine with oil filter
All models
approx. 3.5 US qt (3.3 l)
Approved engine oils
Transmission
All models
2.4 US qt (2.3l)
BOT328
Brake system
All models
1.05 US qt (1.0 l)
Brake fluid (DOT 4+)
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:
including a reserve of
All models
1.32 US gal (5.0 l)
Minimum Posted Octane 91 (Afvg. of 96 RON/86 MON)
Air conditioning system*
All models
R
134a refrigerant and special PAG lubricant oil (never R
12)
Windshield washer system
All models
4.0 US qt (3.8 l)
Windshield washer concentrate
1
1 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. Follow suggested mixing ratios (

page 308).

Service fluids and capacities
>> Technical data.
309 Coolants
The engine coolant is a mixture of water and
anticorrosion/antifreeze, which provides:
• Corrosion protection
• Freeze protection
• Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection to
approximately
35°F (
37°C) and corrosion
protection.!
Add premixed coolant solution only.
Adding water and MB 325.0 Anticorrosion/An

tifreeze separately from each other, could
cause engine damage not covered by the
smart Limited Warranty.
If the antifreeze mixture is effective to
35°F
(
37°C), the boiling point of the coolant in the
pressurized cooling system is reached at
approximately 266°F (130°C).The coolant solution must be used year round,
even in countries which have high tempera

tures to provide the necessary corrosion
protection and increase boiling protection.
Refer to Maintenance/ Service Booklet for re

placement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the Mainte

nance booklet is only applicable if MB 325.0
Anticorrosion/Antifreeze solution or other
smart approved products of equal specifica

tion are used to renew the coolant concentra

tion 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% anticorro

sion/antifreeze (equivalent to freeze protec

tion to approximately
35°F [
37°C]).If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protection
to approximately
49°F [
45°C]), 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 have
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.